Citric acid makes lemons taste sour. Which of the following is a functional group that would cause a molecule such as citric acid to be acidic? See Concept 4.3 (Page) A. hydroxyl B. carboxyl C. hydrocarbon D. carbonyl E. amino
Answers
The functional group that would cause a molecule such as citric acid to be acidic is the carboxyl group. This is because the carboxyl group contains both a carbonyl group and a hydroxyl group, which allow it to donate a hydrogen ion (H+) to a solution, making it acidic.
In citric acid, there are three carboxyl groups, each of which can donate a hydrogen ion, making it a triprotic acid.
On the other hand, the hydroxyl group (A) and the hydrocarbon group (C) do not have the ability to donate hydrogen ions to a solution, and therefore do not contribute to acidity.
The amino group (E) has a basic property, meaning it accepts hydrogen ions from a solution, making it a basic functional group.
In summary, the carboxyl group in citric acid is responsible for its acidity due to its ability to donate hydrogen ions to a solution.
Know more about citric acid here:
https://brainly.com/question/16735211
#SPJ11
Related Questions
Two atoms of uranium that differ in their numbers of neutrons are called
Answers
Hopes this helps :)
What is the difference between a point mutation and a frameshift mutation
Answers
16. How old are the oldest known fish fossils, according to the 1996 Henry Gee article and the 1996 Philippe Janvier article? ______________________________
17. Where were they collected? ________________________________
18. What are ostracoderms? ________________________________
19. What material composed the internal skeleton of the ostracoderms? ________________________________
20. Why is the internal skeleton of ostracoderms poorly preserved or not preserved? _____________________________
Answers
16. According to the 1996 Henry Gee article and the 1996 Philippe Janvier article, the oldest known fish fossils are about 530 million years old.
17. The oldest known fish fossils were collected from the Yunnan Province in China.
18. Ostracoderms were a group of jawless fish that lived from the Early Ordovician to the Late Devonian period, approximately 510 to 360 million years ago. They were among the earliest vertebrates to evolve, and are considered to be the ancestors of all jawed vertebrates.
19. The internal skeleton of ostracoderms was composed of cartilage.
20. The internal skeleton of ostracoderms is poorly preserved or not preserved at all because cartilage is much less durable than bone. As a result, only the external parts of the ostracoderm skeleton, such as the bony plates that covered their bodies, are typically preserved as fossils.
This has made it difficult for scientists to study the internal anatomy of ostracoderms and to understand how their skeletal structures evolved over time.
The oldest known fish fossils are about 530 million years old and were collected from the Yunnan Province in China. Ostracoderms were a group of jawless fish that lived from the Early Ordovician to the Late Devonian period and were the earliest vertebrates to evolve.
The internal skeleton of ostracoderms was composed of cartilage, which is much less durable than bone and therefore poorly preserved or not preserved at all as fossils. This has made it difficult for scientists to study the internal anatomy of ostracoderms.
For more question on fossils click on
https://brainly.com/question/11829803
#SPJ11
According to the 1996 Henry Gee article and the 1996 Philippe Janvier article, the oldest known fish fossils are about 530 million years old.
The oldest known fish fossils were collected from the Yunnan Province in China.
Ostracoderms are extinct jawless fish that lived during the Paleozoic Era.
The internal skeleton of ostracoderms was composed of cartilage.
The internal skeleton of ostracoderms is poorly preserved or not preserved because cartilage does not fossilize as well as bone.
The oldest known fish fossils are about 530 million years old and were collected from the Yunnan Province in China. Ostracoderms were a group of jawless fish that lived from the Early Ordovician to the Late Devonian period and were the earliest vertebrates to evolve. The internal skeleton of ostracoderms was composed of cartilage, which is much less durable than bone and therefore poorly preserved or not preserved at all as fossils. This has made it difficult for scientists to study the internal anatomy of ostracoderms.
To know more about fossils
brainly.com/question/31419516
#SPJ11
CAN SOMEBODY PLSSSS STILL ANWSER I NEED THIS ASAP BIOLOGY HELP!!!!!!!!!!!!!! BRAILIESTT
Answers
Answer:
C, brainliest plz??
Explanation:
Place the following events in the correct order in which thy occur in the Calvin cycle, beginning at the top with the carbon fixation step.
A. The 6-carbon molecule splits to form PGA.
B. Some PGAL is converted into glucose and other sugars, and some PGAL is converted back to RuBP.
C. PGA is converted into PGAL.
D. The enzyme rubisco combines carbon dioxide with RuBP to form a 6-carbon unstable molecule.
Answers
The correct order of events in Calvin cycle is: D, A, C, and Calvin cycle starts with the enzyme Rubisco combines carbon dioxide with RuBP to form a 6-carbon unstable molecule.
What is the Calvin cycle?The Calvin cycle is the process by which carbon dioxide is fixed in photosynthesis. The Calvin cycle is part of the light-independent reactions of photosynthesis. Following are the events in the correct order in which they occur in the Calvin cycle, beginning at the top with the carbon fixation step:
Step 1: The enzyme rubisco combines carbon dioxide with RuBP to form a 6-carbon unstable molecule.
Step 2: The 6-carbon molecule splits to form PGA.
Step 3: PGA is converted into PGAL.
Step 4: Some PGAL is converted into glucose and other sugars, and some PGAL is converted back to RuBP.
Thus, the correct order of the events in the Calvin cycle is given as: D. The enzyme rubisco combines carbon dioxide with RuBP to form a 6-carbon unstable molecule, A. The 6-carbon molecule splits to form PGA, C. PGA is converted into PGAL, and B. Some PGAL is converted into glucose and other sugars, and some PGAL is converted back to RuBP.
Learn more about Calvin cycle here:
https://brainly.com/question/30808737
#SPJ11
The bar chart shows the heights of pea plants grown from 500 pea seeds.What variation do the plants show?
A. Continuous variation only
B. Discontinuous variation only
C. Both continuous variation and discontinuous variation
D. Neither continuous variation and discontinuous variation
Answers
Answer:
C. Both continuous variation and discontinuous variation
Explanation:
this was the answer on my quiz a couple days ago
Fat which has been digested is packaged in protein- and phosphorus-containing lipoproteins which travel in your lymph to your bloodstream. These are called
Answers
Fat which has been digested is packaged in protein- and phosphorus-containing lipoproteins which travel in your lymph to your bloodstream. The lipoproteins that transport digested fat from the lymph to the bloodstream are called chylomicrons.
Chylomicrons are large lipoprotein particles that are formed in the small intestine after the absorption of dietary fats. They are composed of a core of triglycerides (fats), surrounded by a shell of proteins, phospholipids, and cholesterol. Chylomicrons are released into the lymphatic system and eventually enter the bloodstream, where they deliver dietary fats to various tissues throughout the body.
To know more about lymphatic system, click here
brainly.com/question/3318384
#SPJ11
HURRY!! How does topsoil keep pollution out of our aquifers?
It acts as a water filter as groundwater moves through it
It actually adds additional pollution to the groundwater
People don't usually pollute soil, so water in those areas are safer from pollution.
Answers
Answer: it acts as a water filter as groundwater moves through it
Explanation:
Soil is a medium in which life is sustained through plant growth, the recycling of matter and nutrients, and the purification and cycling of water. Soil can act as a sponge to purify water, and thus plays a role in water quality.
Which of these statements describes some aspect of facilitated diffusion?
Answers
Osmosis is also known as facilitated diffusion. Solutes diffuse more easily through the membrane's phospholipid pores. For facilitated diffusion to move a concentration gradient, energy is needed.
Passive transport that enables solutes to cross a cell's plasma membrane is known as "facilitated diffusion." Through specific membrane proteins, solutes travel across the membrane along their concentration gradient.During this process, chemicals like glucose, fructose, galactose, and several vitamins are transported. as was investigated in the simple diffusion, by passing through the lipid bilayer. aquaporins, transmembrane proteins that serve as water channels, allow water to pass through them.Facilitated diffusion cannot result in the net transport of molecules from a low concentration to a high concentration because this would necessitate active transport, which is characterized by energy input.
Learn more about facilitated diffusion here:
brainly.com/question/15162488
#SPJ4
The correct answer is option 5: Facilitated diffusion of solutes may occur through channels or transport proteins in the membrane.
Facilitated diffusion is a type of passive transport that enables the movement of molecules or ions across a cell membrane without requiring the use of energy. Unlike simple diffusion, facilitated diffusion relies on the presence of transport or channel proteins that allow certain molecules to move across the membrane.
These proteins create a pathway through the membrane that is selective for specific molecules and can help to regulate the concentration of different solutes on either side of the membrane. Because facilitated diffusion relies on the concentration gradient of the solute, it does not require the use of ATP or other forms of energy to drive the process.
Learn more about Facilitated Diffusion:
https://brainly.com/question/28021053
#SPJ4
Complete Question:
Which of these statements describes some aspect of facilitated diffusion?
Facilitated diffusion is another name for osmosis.Facilitated diffusion of solutes occurs through phospholipid pores in the membrane.Facilitated diffusion requires energy to drive a concentration gradient.There is only one kind of protein pore for facilitated diffusion.Facilitated diffusion of solutes may occur through channel or transport proteins in the membrane.Which is a requirement for diffusion to take place?
Answers
Answer:
Explanation: Diffusion is a process that allows particles to move from areas of high concentration to areas of lower concentration. The process requires that particles are moving. As long as particles are not at a temperature of 0K (absolute zero) they have kinetic energy (energy of movement)
students use a microscope to look for structures present in four different cells. the students placed an x for each structure that was viewed for each cell on the table shown. which cell that was viewed is most likely a prokaryote?
Answers
Because prokaryotic cells lack the membrane-bound organelles found in eukaryotic cells and have simpler structures, the cell with only two structures observed is most likely a prokaryote.
How do you know if a cell is a prokaryotic one when examined under a microscope?Compared to eukaryotic cells, prokaryotic cells are much smaller, lack organelles, and have no nucleus. A cell wall covers every prokaryotic cell. Many likewise have a container or sludge layer made of polysaccharide. Prokaryotes frequently have members (projections) on their surface.
What structural differences between two types of cells would you observe under a microscope?The nucleus, for example, is a membrane-bound organelle in eukaryotic cells, whereas prokaryotic cells do not. The presence of mitochondria and chloroplasts, the cell wall, and the structure of chromosomal DNA are among the cellular structure distinctions between prokaryotes and eukaryotes.
To know more about prokaryotic cells visit:-
https://brainly.com/question/29771587
#SPJ1
What type of spread is it when there is an E. coli outbreak every time the cattle yard upstream of the spinach fields flood
Answers
When there is an E. coli outbreak every time the cattle yard upstream of the spinach fields flood, it is referred to as a point-source spread. Point-source spread refers to a type of epidemic in which the outbreak is caused by contamination from a single source that is identifiable.
A single source is responsible for the transmission of the infection in this case. The disease usually spreads only to people who are in close proximity to the source of the contamination. The spread of E. coli bacteria in this case can be prevented by adopting various measures.
For instance, establishing better livestock manure management to minimize the amount of E. coli in runoff would be useful. Additionally, better testing and monitoring of agricultural irrigation water would also help in preventing outbreaks caused by E. coli infections. The use of proper hand hygiene techniques is also recommended to avoid the spread of the infection from one person to another.
Therefore, when the cattle yard upstream of the spinach fields flood and an E. coli outbreak occurs every time, it is referred to as a point-source spread.
To know more about Cattle visit :
https://brainly.com/question/28175778
#SPJ11
Conjugation differs from reproduction because conjugation Group of answer choices transfers DNA horizontally, to nearby cells without those cells undergoing replication. transcribes DNA to RNA. replicates DNA. transfers DNA vertically, to new cells. copies RNA to make DNA.
Answers
Answer:
it is differs from reproduction because conjunction group of answers
Conjugation transfers DNA horizontally, to nearby cells without those cells undergoing replication.
Conjugation is a mechanism of genetic transfer in bacteria where genetic material, usually in the form of plasmids, is transferred from one bacterial cell to another. Unlike reproduction, which involves the replication and inheritance of genetic material through cell division, conjugation allows bacteria to transfer genetic material horizontally between cells that are in close proximity to each other.
During conjugation, the donor bacterial cell containing the plasmid makes contact with the recipient cell through a specialized structure called a pilus. The plasmid DNA is then transferred from the donor cell to the recipient cell through this pilus. The transferred DNA can include genes that provide advantages such as antibiotic resistance or the ability to metabolize certain substances.
The key difference between conjugation and reproduction is that conjugation does not involve replication of the recipient cell's entire genome. Instead, it transfers specific genetic material from one cell to another. The recipient cell does not undergo replication as a result of conjugation but acquires new genetic information from the donor cell.
Reproduction, on the other hand, involves the replication and inheritance of the complete set of genetic material in the parent cell. It results in the production of offspring cells that are genetically identical or similar to the parent cell.
In summary, conjugation is a form of genetic transfer in bacteria where DNA is horizontally transferred between cells without those cells undergoing replication. It allows for the exchange of genetic material and the acquisition of new traits by recipient cells. Reproduction, on the other hand, involves the replication and inheritance of genetic material through cell division.
To learn more about Conjugation, here
https://brainly.com/question/31667067
#SPJ6
Each individual in a population belongs to one of three possible genotypes: AA (dominant), AB (hybrid), or BB (recessive). In a laboratory experiment, an individual of unknown genotype is mated with a hybrid. Offspring inherit one gene from each parent. A parent passes on a particular gene to the offsrping with equal probability. Show that the probabilities for the genotypes AA, AB, and BB of the offspring are given by vectors:
(a) (.5, .5, 0) if the unknown parent is dominant
(b) (.25, .5, .25) if the unknown parent is hybrid
(c) (0, .5, .5) if the unknown parent is recessive
Suppose the experiment of above is repeated a large number of generations—that is, in each generation an offspring is chosen at random and mated with a hybrid. Set up this process as a Markov chain, show that it is regular, and find the unique fixed-point stochastic vector. Interpret the result.
Answers
Interpreting the result, the unique fixed-point stochastic vector will provide insights into the long-term distribution of genotypes in the population. It shows the probabilities of each genotype reaching a steady state over multiple generations, taking into account the initial proportions and the probabilities of transitioning between genotypes in each mating.
In this laboratory experiment, we have three possible genotypes: AA (dominant), AB (hybrid), and BB (recessive). We are given that an individual of unknown genotype is mated with a hybrid, and the offspring inherits one gene from each parent with equal probability.
To determine the probabilities for the genotypes AA, AB, and BB of the offspring, we can consider the known genotype of the hybrid parent. Let's analyze each case:
(a) If the unknown parent is dominant (AA), it will always pass on the dominant gene (A) to the offspring. Therefore, the probabilities for the genotypes AA, AB, and BB of the offspring will be (1, 0, 0).
(b) If the unknown parent is a hybrid (AB), it has a 50% chance of passing on either the dominant gene (A) or the recessive gene (B) to the offspring. Therefore, the probabilities for the genotypes AA, AB, and BB of the offspring will be (0.5, 0.5, 0).
(c) If the unknown parent is recessive (BB), it will always pass on the recessive gene (B) to the offspring. Therefore, the probabilities for the genotypes AA, AB, and BB of the offspring will be (0, 0.5, 0.5).
Now, let's consider the process as a Markov chain, where each generation involves randomly selecting an offspring and mating it with a hybrid. This process is regular because there is a non-zero probability of transitioning from any state to any other state in a finite number of steps.
To find the unique fixed-point stochastic vector, we need to solve the equation:
P = P * T
Where P is the fixed-point stochastic vector and T is the transition matrix. The unique solution for P will represent the long-term probabilities of the genotypes in the population.
This analysis can help us understand how the population's genetic composition evolves over time and the stability of each genotype in the long run.
Learn more about long-term distribution here:-
https://brainly.com/question/31971644
#SPJ11
A woman with type A blood is claiming that a man with type AB blood is the father of her child who is type B. Could this man be the father of the child? _Show the possible crosses; remember that the woman can have AA or AO genotypes. PO Assuming that he is the father, what must the mother's genotype be? 9. A man with type AR hlond in
Answers
a. If a woman with type A blood is claiming that a man with type AB blood is the father of her child who is type B could be the father of the child.
b. If a man with type AB blood is the father, the mother's genotype must be AO.
The possible crosses are as follows:
Case 1: Mother has AA genotype
A A A A
I i B O
-------- --------
A I A A i (child)
IAIA = AA IAi = AO
The father has blood type AB. AB blood group is formed by IA and IB alleles; thus, his genotype must be IAIB.
Case 2: Mother has AO genotype
A O A O
I i B O
-------- --------
A I A O i (child)
IAi = AO Oi = O
The father has blood type AB. AB blood group is formed by IA and IB alleles; thus, his genotype must be IAIB. Therefore, the man with type AB blood could be the father of the child.
In order for the mother to have a child with blood type B, she must have at least one B allele. From the possible crosses above, we can see that if the mother has an AA genotype, she cannot have a child with type B. Hence, the mother must have an AO genotype if the child has type B. If the father is AB, the child inherits either an A or B allele from him. Therefore, the mother must have donated the B allele for the child to have blood type B. Therefore, the mother's genotype must be AO.
Learn more about blood type: https://brainly.com/question/27488784
#SPJ11
describe hooke's contribution to the history of the cell .
Answers
Answer:
of the law of elasticity (Hooke's law), for his first use of the word cell in the sense of a basic unit of organisms (describing the microscopic cavities in cork), and for his studies of microscopic fossils
Explanation:
what happens if something in the scientific process doesn't go as planned
Answers
Answer:
You take observations and record it in your data. And state that your hypothesis was wrong
Peat is a mixture of partially decomposed plant and animal material found in waterlogged, acidic, anaerobic environments. people debate whether peat is a fossil
fuel. to be considered a fossil fuel, a material must be of biologic origin, be used as a source of energy, and replenish on a time scale greater than human
lifetimes. peat reserves have declined over time. however, peat harvesters claim that a restoration process
can make peat a renewable resource and allow it to
be classified as a biofuel. the restoration process is outlined in the table.
stages of peatland restoration
stage description
time
rewetting makes surface wet again 3-5 years
renaturation replaces vegetation several decades
regeneration accumulates new peat 100 years or more
which conclusion can be drawn based on the information in the table?
оа.
ов.
peat is a fossil fuel because rewetting it takes only 3-5 years.
peat is a fossil fuel because the total time for restoration is lengthy.
peat is not a fossil fuel because it has blologic origins, making it a biofuel.
peat is not a fossil fuel because humans can promote the replenishment of peat.
ос.
od
Answers
Based on the data from the restoration process of peat, it can be concluded that peat is a fossil fuel because the total restoration time is lengthy.
What are fossil fuels?Fossil fuels are fuels produced from the remains of dead plants and animals which decomposed under intense heat and pressure over a long period of time.
Fossil fuels are non-renewable energy sources because their time of replenishment is longer than a human lifetime.
Examples of fossil fuels include:
petroleum cokepeat.In the restoration process of peat, the restoration time takes a long time of over 100 years.
Therefore, it can be concluded that peat is a fossil fuel because the total time for restoration is lengthy.
Learn more about fossil fuels at: https://brainly.com/question/10172005
What is the name of the process that occurs when a plant loses too much water by transpiration and is unable to replace it?
Answers
Answer:
wilting
Explanation:
When plants lose excess water than its rate of absorption, wilting takes place. When wilting occurs, cells of the plants lose water and are not able to operate properly. When the conditions are dry, hot and in summer, the rate of water evaporation is rapid.
I hope it helps.
Wilting occurs when plants lose more water than they can absorb. Plants wilt when their cells start to lose water and become unable to function properly. The rate of water evaporation is quick when the weather is hot, dry, and summer.
What process that occurs, plant water by transpiration?Wilting is the lack of stiffness in plant parts that are not made of wood. This happens when the amount of water in non-lignified plant cells decreases, causing the turgor pressure to approach zero. Wilting reduces water loss by making the leaves' exposed surface area smaller.
Plants wilt as a result of moisture loss through their leaves. The transfer of water from the roots through the entire plant, including the leaves, is a natural process known as transpiration.
Therefore, wilting process that occurs when a plant loses too much water by transpiration and is unable to replace it.
Learn more about transpiration here:
https://brainly.com/question/21333424
#SPJ2
Which of the following objects have kinetic energy?
Choose 2 answers:
A. balloon rising slowly through the air
B. flower pot on a window sill 10 meters above the ground
C. a car moving on the freeway at 100 kilometers per hour
D. a motorcycle sitting still, parked in a garage
Answers
Answer:
A. balloon rising slowly through the air.
C. a car moving on the freeway at 100 kilometers per hour.
The ligaments that limit the anterior and posterior movement of the femur and maintain the alignment of the femoral and tibial condyles are the
(a) cruciate ligaments
(b) fibular collateral ligaments
(c) patellar ligaments
(d) tibial collateral ligaments
Answers
The ligaments that limit the anterior and posterior movement of the femur and maintain the alignment of the femoral and tibial condyles are the cruciate ligaments (A).
What are ligaments?Ligaments are strong, elastic connective tissues that connect bones to other bones. They are essential components of our musculoskeletal system, which provides structure, support, and movement to the body.
What are cruciate ligaments?
The cruciate ligaments are two strong bands of connective tissue that cross each other and form an "X" shape inside the knee joint. The anterior cruciate ligament (ACL) is located in the front of the knee joint, while the posterior cruciate ligament (PCL) is situated in the back of the joint.
Both the cruciate ligaments are important for stability and movement of the knee joint. They limit the anterior and posterior movement of the femur (thigh bone) and maintain the alignment of the femoral and tibial condyles (articulating surfaces of the thigh bone and the shin bone).
Therefore, option (a) Cruciate Ligaments is correct.
Learn more about Ligaments here: https://brainly.com/question/30789621
#SPJ11
Describe what is happening at each stage of the demographic transition. What is
causing the birth rate, death rate and population numbers to change?
Answers
The birth rate which was steadily increasing is now decreasing rapidly and then fluctuating at a steady rate.
The death rate also increase slightly and then sharply decreases and then alternating in a stead rate with the birth rate
The population numbers which was low is now sharply increases.
What is demographic transition?Stage 1: High birth rate, high death rate, low population numbers.
When there is no good healthcare or enough schools, it causes a lot of babies and people to die. This makes the number of people living in that place very small.Stage 2: High birth rate, decreasing death rate, rapidly increasing population numbers.
When people have better healthcare, cleaner living spaces, and better hygiene, fewer people die.More people are being born because of how our culture and society are, which means we are becoming more populated very quickly.Stage 3: Low birth rate, low death rate, increasing population numbers.
Birth rates are going down because more people can prevent pregnancy, women have more power, and there are more work choices for women.Fewer people are dying because doctors and medical technology are better now.Population numbers increases and stabilize as birth and death rates reach a balance.Read more about demographic transition here:
https://brainly.com/question/25222816
#SPJ4
1. What was the accepted belief in the origin of life in the 19th century?
Answers
Answer:
As evolution became widely accepted in the 1870s, caricatures of Charles Darwin with the body of an ape or monkey symbolised evolution.
dios.
In the early 1900s, California citrus growers sprayed their trees with cyanide gas to kill scale insects. By 1914, some scale insects were
surviving the spraying, and eventually the whole population showed resistance to cyanide. Which of the following statements best
explains how resistance to cyanide spread in the scale insect population?
OA Insects without a resistance gene underwent mutation O B. Insects with a resistance gene survived the first
upon contact with the cyanide to acquire resistance.
cyanide sprayings and passed the gone to their
offspring.
OC Predators put greater selection pressure on insects
with a resistance gene than on insects without a
resistance gene.
OD Parasites infecting the insect population carried the
trait from insects with a resistance gene to insects
without a resistance gene.
Answers
Answer:
B. Insects with a resistance gene survived the first cyanide sprayings and passed the gene to their offspring
Explanation:
So, just by chance, one or more bugs already had some genes that provided them resistance to fight the cyanide. These bugs survived and the rest died. So since only the resistance bugs survived, they transferred their genes onto their kids and now kids are also immune. Now the cycle continues over generation until everyone is pretty much immune to the sprays.
This is exactly why we are currently facing and will face massive deaths due to bacterial resistance to the antibiotics we use.
A new virus is discovered that has double-stranded DNA and no envelope. The highly purified virions form large crystals. This new virus is most likely a member of which virus family
Answers
Adenoviridae is the new virus which has double-stranded DNA and no envelope.
What is Adenoviridae?This belong to the virus family and is characterized by its medium size and has a has double-stranded DNA with no envelope.
They are also capable of forming crystals when the virions cone together in this scenario.
Read more about Adenoviridae here https://brainly.com/question/13051253
#SPJ1
Which of these statements is true of ATP?
A. It stores energy as glucose.
B.It stores energy for cellular processes.
C. It converts sunlight into chemical energy.
D. It contains less stored energy than ADP.
Answers
Answer:
A. It stores energy as glucose.
Hope this helps!
Why is DNA analysis useful for classification
Answers
Answer:
Well, it helps us categorize organisms so we can more easily communicate biological information.
Explanation:
Which of the following shows natural selection?Select one:a.A horse's parents were racers. The fastest horses are bred to produce the fastest offspring.b.Some tuna live in the Pacific Ocean. They are fast swimmers so they are likely to survive and pass on their genes.c.Some trees produce apples for baking. Seeds from the largest apples are kept to produce the next generation of trees.d.Certain rabbits are raised for fur. Rabbits with soft fur are bred with other rabbits with soft fur. They eat grain and vegetables.
Answers
Natural selection is the process in which some organisms that show better adaptation to the environment are more likely to produce an offspring. In the case of the exercise, the answer is:
b. Some tuna live in the Pacific Ocean. They are fast, so they are likely to survive and pass on their genes.
It means that as they are better adapted to that environment due to the fact they are fast swimmers, they are likely not only to survive, but to pass their genes and produce offsprings.
What is happening to the DNA molecule in the figure?(Explain the first step in DNA replication)
Answers
Answer:
As this is DNA replication, this is the unwinding process
Explanation:
In DNA replication, the parent DNA to be replicated is unwound to enable access of the replication machinery (replisome) to this genetic material. The origin of replication will be identified first, which in the prokaryotes is only one, and in the eukaryotes, we have many. This sites are recognized by specific sequences on the genome. after this, melting of the DNA occurs at this origin creating a replication bubble and two replication forks. This allows for the unwinding of the DNA by the enzyme Helicases in the direction of the replication fork. Another enzyme present in this step is also the single strand binding proteins (SSB). These proteins function in the prevention of re-annealing of the unwound DNA strand by attaching themselves to each strands. Another enzyme called the topoisomerases also function here by reducing the torque (twisting) produced upstream of the replication fork as result of DNA unwinding. An example is the gyrase.
Why would a scientist most likely chose to perform a simulation instead of a lab experiment or field observation?
O The lab experiment might be dangerous or too difficult to do.
O Simulations rely on mathematical analysis and have one correct answer.
Field observations are less accurate than computer simulations.
Simulations are more accurate than lab work.
Answers
The lab experiment might be dangerous or too difficult to do whereas simulation is a safe and easy way of presenting a process.
What is a simulation?A simulation is a way of imitating a process in the real life in order to predict what will happen and the reason for its happening. Scientists use simulations to answer different questions. It is also used to make predictions.
In conclusion, ''the lab experiment might be dangerous or too difficult to do'' is the correct statement.
Learn more about simulation here: https://brainly.com/question/1231005