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Hello! In an aquaponics system, you can have various organisms that perform photosynthesis, such as algae, duckweed, and aquatic plants like watercress, lettuce, and basil. These organisms are important in the system as they convert carbon dioxide into oxygen, which is essential for the survival of the fish in the system. Additionally, they also help in removing excess nutrients from the water, thereby improving water quality.
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Assignment: Galapagos Islands Changes Exploration
Sources Used – List the URL’s of the websites used below:
Galapagos Islands Background
Location
Description of the islands
(size, how they are formed, climates)
Species of the islands
History of species of the islands
Darwin’s Research
What did he study?
What did he observe?
What did he conclude?
What scientific breakthrough did his conclusions lead to?
The Grants’ Research
Animal studied
Brief goal of their studies
What did they observe?
What did they conclude?
Questions
1. What did Darwin’s research on the Galapagos Islands show?
2. What did the Grant’s research on the Galapagos Islands show?
3. Describe how species on the Galapagos Islands have changed over time.
Answers
Answer:
Explanation:
did you already get the answers if yes ill still help if no ill still help but im working on it rn and ill be here in 30 minutes
Complete the statement below using the drop-down menus.
It is believed mitochondria evolved from
,
while chloroplasts evolved from
Answers
Mitochondria evolved from aerobic bacteria while chloroplasts evolved from cyanobacteria.
Mitochondria and chloroplasts likely evolved from engulfed prokaryotes that once lived as independent organisms. A eukaryotic cell engulfed an aerobic prokaryote, which then formed an endosymbiotic relationship with the host eukaryote, gradually developing into a mitochondrion.
Chloroplast evolutionarily derives from a primitive cyanobacteria that was engulfed by non-photosynthetic cells and, progressively, after losing most of its DNA, became the actual chloroplast that retains only a fraction of the original cyanobacterial genes. Chloroplasts of plants and algae are currently believed to originate from a cyanobacterial endosymbiont.
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which two parts does a cow eye have that human eye does not
Answers
If a DNA molecule with a total of 2500 nucleotides has 1500 purines, how many guanines are in this DNA molecule?
Answers
Answer:
I'm pretty sure there would be 1000 guanines in the DNA molecule.
Explanation:
Hope this helps. . . <3
If a DNA molecule with a total of 2500 nucleotides has 1500 purines, total number of guanines are in this DNA molecule is 1000 guanines in the DNA molecule.
What will be the total number of thymines if a DNA molecule has a total of 1500nucleotides?The DNA molecules would be given and it have 450 thymines if the DNA molecule has the total of 1500 nucleotides and the DNA molecule also have been known as the deoxyribonucleic acid has been made up of the double helix. The DNA molecule with the total of 1500 nucleotides would contain 750 cytosine and Thymines and 750 guanines and adenine.
Hence, we can have the expression:
C + T = 750
If there are 300 cytosines, hence;
300 + T = 750
T = 750 - 300
T = 450
A nucleotide has the monomer constituting DNA or RNA biopolymer molecules and the double-stranded DNA molecule posseses two strands of DNA made up of the nucleotides.
Therefore, If a DNA molecule with a total of 2500 nucleotides has 1500 purines, total number of guanines are in this DNA molecule is 1000 guanines in the DNA molecule.
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one way in which stigma is adapted for reproduction in plants
Answers
Answer:
In a flower, this landing zone and entrance is the stigma. It plays a pivotal role in reproduction. Most stigmas are adapted to trap pollen with hairs, flaps and other surfaces to increase their efficiency. Most stigmas are covered with a waxy, sticky substance.
When the human body is subjected to prolonged starvation, cells use up all available glucose first, including glucose bound up in glycogen. When all glucose has been depleted, cells use lipids as a fuel source, and when lipids have been depleted, cells use proteins as a fuel source. Throughout these shifts to new fuel sources, the enzymes of glycolysis and the citric acid cycle remain present and active in the cells. Which statement explains the constancy of these enzymes under conditions of starvation?
Answers
The options are missing from the question. They are;
a. These enzymes are inhibited but not destroyed under conditions
of starvation since destroying them would require energy input.
b. These enzymes continue to be needed since catabolism of lipids
and proteins leads to intermediates that are oxidized through
these pathways.
c. Once enzymes are produced in a cell, they continue to function
for as long as the cell lives even if they are not used.
d. All catabolic enzymes are expressed when energy levels are low
in a cell, including enzymes that cannot oxidize the fuel
molecules that are available.
e. The cell continues to produce these enzymes in case glucose or
other carbohydrates become available again.
The correct answer to the question is option B
THESE ENZYMES CONTINUE TO BE NEEDED SINCE CATABOLISM OF LIPIDS AND PROTEINS LEADS TO INTERMEDIATES THAT ARE OXIFIZED THROUGH THESE PATHWAYS.
The enzymes involved in glycolysis are; hexokinase, phosphofructokinase, and pyruvate kinase.
The cell use Amino acids as energy source through the conversion of the amino acids that enter glycolysis or the citric cycle that are eventually catabolized to CO2 at various points through the help of their enzymes (fumarase) or (fumarase hydratase) speeding up the rate of the reaction.(pyrimidines).
Genetic engineering is the manipulation of genes using cloning and transformation to change the
gene structure. Genetic engineering has many positive outcomes. These positive outcomes include
a. Manipulation of crops decreasing growth rate.
b. decreasing the diversity of living organisms
c. increasing the possibility of new pathogens
d. fruits and vegetables do not spoil easily
Answers
Answer:
B
Explanation:
A cell can form beads on a string chromatin, but not solenoid fibers. Which molecule has likely been removed or mutated in this cell?
a. Η1
b. non-histone proteins
c. H2A
d. topoisomerase
Answers
The molecule which has likely been removed or mutated from a cell that can form beads on a string chromatin, but not solenoid fibers is: A. Η1
A cell can be defined as the fundamental functional, structural and smallest unit of life for all living organisms.
Genome editing refers to a high-tech process through which scientists remove (delete), replace or insert a deoxyribonucleic acid (DNA) sequence into the cells of a living organism such as an animal, bacterium, plant, etc., so as to improve on its physical and chemical conditions or correct a genetic disorder.
Chromatin can be defined as a complex form of deoxyribonucleic acid (DNA) and protein found in the cells of an eukaryotic organism.
In the classic model of chromatin, the beads simply refer to the nucleosomes while the string is simply the linker deoxyribonucleic acid (DNA).
Basically, the deoxyribonucleic acid (DNA) is wrapped around histone proteins to form nucleosomes and the beads on a string structure (euchromatin).
Furthermore, there exists a linker histone H1 in addition to core histones that reaches the entry or exit of the deoxyribonucleic acid (DNA) strand on the nucleosome.
In conclusion, a cell cannot form beads on solenoid fibers but it can form beads on a string chromatin because the H1 molecule has likely been removed or mutated in the cell.
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How does the amount of day light affect the number of eggs laid by a chicken?
Hypothesis:
Independent variable:
Dependent variable:
Control variable:
Answers
Answer:
Hypothesis: Day light produces more eggs laid by chickens
independent: Light
control: amount of day light
dependent: Amount of eggs
The process of meiosis is essential in the sexual reproduction and life cycle of many organisms. The outcome of meiosis is haploid gametes. Which statements correctly describe the importance of meiosis to the life cycle or these organisms?
A) Increasing genetic diversity ensures that no two haploid gametes are exactly the same.
B) Taking a diploid cell to its haploid state occurs during the first cell division of meiosis.
C) Checkpoints during meiosis ensures that chromosome separation occurs accurately, avoiding non-disjunction.
D) DNA synthesis occurs before each cell division in meiosis ensures that the integrity of the chromosomes is maintained.
E) Reducing the number of chromosomes by half during meiosis ensures the chromosome number is maintained during fertilization.
Answers
Answer:
E) Reducing the number of chromosomes by half during meiosis ensures the chromosome number is maintained during fertilization.
A) Increasing genetic diversity ensures that no two haploid gametes are exactly the same.
Explanation:
Meiosis is a kind of cell division that strictly occurs in sexually-reproducing organisms. It is the process whereby four daughter cells that are genetically different from their parents are produced. In meiosis, the chromosome number of each daughter cell (gamete) is reduced by half. As highlighted in this question, the meiotic process is essential in the sexual reproduction and life cycle of many organisms.
This importance is attributed to the fact that:
- Reducing the number of chromosomes by half during meiosis ensures the chromosome number is maintained during fertilization. That is, a diploid organism (2n) produces a haploid gamete (n), which becomes diploid again when fertilized by another gamete.
- Increasing genetic diversity ensures that no two haploid gametes are exactly the same. This occurs because of a process called CROSSING OVER, which enables that the alleles of each gamete is recombined to be different from one another in order to promote genetic diversity.
Answer:
A, B, C, E
Explanation:
i just did it
A postsynaptic neuron has an RMP of -70mV and a typical threshold of -55mV. It has three presynaptic inputs-from neurons X, Y, and Z. Stimulation of
neuron X causes the postsynaptic neuron to depolarize by 0.5 mV. When X and Y are stimulated simultaneously, the postsynaptic neuron depolarizes by
1 mV, If X fires 10 times and Y fires 10 times the result will be …
Multiple Choice
a subthreshold summation.
presynaptic inhibition.
threshold is reached and an AP is fired.
many APs are fired.
the membrane depolarizes.
Answers
When X fires 10 times and Y fires 10 times, the result will be a subthreshold summation.
Subthreshold summation happens when two or more presynaptic inputs that are sub-threshold (i.e., they cannot create an action potential) combine their effects on the postsynaptic neuron.
Here, the postsynaptic neuron has an RMP of -70mV and a typical threshold of -55mV. When neuron X is stimulated, it depolarizes by 0.5 mV.
When X and Y are stimulated simultaneously, the postsynaptic neuron depolarizes by 1 mV, which is sub-threshold (below -55mV).
Therefore, when X fires 10 times and Y fires 10 times, the postsynaptic neuron will experience subthreshold summation and no action potential will be fired.
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In which direction will the object pictured below be accelerating?
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A student claims, "Scientific knowledge that changes cannot be trusted." Which statement best corrects this student's claim?
New evidence changes our scientific knowledge and that strengthens our understanding.
A change in scientific knowledge means we should ignore our previous understanding.
Testing and examining scientific knowledge frequently make it unreliable.
Scientific knowledge cannot change making it always true.
Answers
The statement that best corrects the student's claim that "Scientific knowledge that changes cannot be trusted" is "New evidence changes our scientific knowledge and that strengthens our understanding.
Science is based on experimentation, observation, and evidence. Scientific knowledge is the collection of data and information obtained by this process. New evidence, data, and technology advance our understanding of the world and help us correct previous assumptions.
Therefore, the statement that best corrects the student's claim that "Scientific knowledge that changes cannot be trusted" is "New evidence changes our scientific knowledge and that strengthens our understanding."It is important to note that changes in scientific knowledge are the result of new discoveries and better understandings of natural processes.
New evidence strengthens and develops scientific knowledge by refining previously held assumptions. This does not mean that science is unreliable, but that it is constantly evolving and improving as new information becomes available.
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Genes that are located near each other on the same chromosome are called:A. incompletely dominant.B. codominant.C. linked.D. multiple alleles.
Answers
Incompletely dominance is a form of inheritance in which one allele is not completely expressed in a specific trait because of this pattern of inheritance with its paired allele. So, the explanation doesn't fit and A is incorrect.
Codominanceis a oform of inheritance in which both alleles are expressed, even if they are different, so both traits will appear. So, the explanation doesn't fit and B is incorrect too.
Multiple allele refers t when a population has more than two alleles o f the same gene. So, the explanation doesn't fit and D is incorrect too.
Genetic linkage occurs when two genes are lcated close to each othwer in a chromosome and are often inherited together, and that fits the definition that was given. Therefore, the correct answer is C. linked.
The typical (diploid) cells of the body have 46 chromosomes; how many
chromosomes does each gamete have?
46
23
184
46 pairs
Answers
Answer:
if a person has 45 chromosomes they will get down syndrome
Explanation:
Will this movement re hire an input of energy?
Answers
Their movement will require the input of energy. That is option B.
What is an active transport?An active transport is defined as the movement of molecules across the cell membrane from different compartments in the living organism.
The active transport makes use of energy because of the need to move molecules from a semi permeable membrane that is against a concentration gradient.
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Jenny brings home a plant with an internal concentration of 25g/ml. She puts the plant in her aquarium and fills the aquarium with water from the tap.
The plant will swell and possibly burst if the cell walls are weak.
B
The plant will wilt and possibly break apart if the cell membranes are weak.
C
The plant will thrive in a new type of environment.
D
The plant will become a creeping vine and grow out of the aquarium.
Answers
The plant will swell and possibly burst if the cell walls are weak. So, the correct option is A.
What is Cell wall?A cell wall is an external structural layer that surrounds some types of cells. It may be hard, flexible, or occasionally rigid. It serves as a filtration system as well as structural protection and support for the cell. The cell wall composition varies according to the organism which is permeable in nature
The cell wall isolates the inner elements from the surrounding environment. The cell as well as its organelles are also development in the context, support, and protection by it. But only eukaryotic plants, fungi, and a few prokaryotic creatures have this cellular component. If the plant's cell walls are insufficient in the case above, it will enlarge and possibly burst.
Therefore, the correct option is A.
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A speaker should use this tactic to reinforce key messages or add drama and anticipation to a presentation.
A.
B.
C.
D.
surveys
polling
distracting animations
purposeful pauses
Answers
A speaker should use this tactic to reinforce key messages or add drama and anticipation to a presentation is called as purposeful pauses. So, the correct option is D.
What is Presentation?A presentation is defined as a way of conveying information from a speaker to an audience usually a demonstration, introduction, lecture or speech designed to inform, persuade, inspire, motivate, create goodwill or create a new Idea/product is meant to be presented.
When someone present his/ her presentation, a speaker should use this tactic to reinforce key messages or add drama and anticipation, this type of method is called purposeful pauses.
Therefore, the correct option is D.
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Which of the following correctly identifies the decomposers in the forest food web
shown below? (1 point)
Answers
Explanation:
In the food web, bacteria and fungi are the decomposers
For each adaptation listed, decide what type of adaptation it is (behavioral, structural, or physiological).
1.
Toxins in plant leaves
2.
flippers to swim
3.
large ears to radiate heat
4.
camouflage
5.
laying in the sun to warm up body temperatures
6.
Birds migrating
7.
compounds that prevent the coagulating of blood
8.
Bears Hibernating
a.
behavioral
b.
physiological
c.
structural
Answers
Behavioral adaptations include birds migrating and laying in the sun to warm up body temperatures (Options 6 and 5); structural adaptations include flippers to swim, camouflage, and large ears to radiate heat (Options 2, 4 and 3); physiological adaptations include toxins in plant leaves, compounds that prevent the coagulating of blood, and bears hibernating (Options 1 and 7 and 8).
What are evolutionary biological adaptations?Evolutionary biological adaptations are different strategies that organisms have to survive in particular environmental conditions, which may involve behavioral strategies in which the organisms exhibit certain behaviors to fit environmental conditions.
On the other hand, physiological adaptations are based on changes in the biological mechanisms of organisms such as the movement of blood in certain conditions, while structural adaptations are related to changes in the anatomy.
Therefore, with this data, we can see that evolutionary biological adaptations are diverse and they are associated with strategies to survive and reproduce.
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3. The cycle of oxygen through the atmosphere is closely tied to point) O the carbon cycle. the phosphorus cycle. O the nitrogen cycle. O the water cycle.
Answers
Answer:
water cycle
Explanation:
I just took the test
Which two things cause the orbits of planets to be nearly circular
Answers
Answer: Gravity and inertia
Explanation:
What has to be present in order for metamorphic rocks to form?
Answers
Factors such as high heat and high pressure have to be present in order for metamorphic rocks to form.
What is a Rock?This is referred to as a solid collection of mineral grains that grow or become cemented together and are formed through various types of techniques.
Metamorphic rocks in the other hand is referred to as any of a class of rocks that result from the alteration of preexisting rocks in response to changing environmental conditions and the process it undergoes is metamorphism hence the name given to it.
Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids etc or combination of the factors mentioned above which are usually present in the deep region within the Earth or where tectonic plates meet.
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Shelly and Jason are siblings, but Shelley looks like their father while Jason looks like their mother. Which of the following statements best explains the difference in Shelly’s and Jason’s features?
A. Shelly and Jason inherited different combinations of 23 chromosomes from their mother and 23 chromosomes from their father.
B. Shelly inherited a greater number of chromosomes from their father than Jason did.
C. Shelly inherited a smaller number of X chromosomes from their mother than Jason did.
D. Shelly and Jason had different mutations occur in the 46 chromosomes their inherited from their mother and father.
Answers
Answer: The answer is D.
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A scientist grew bacteria on gel in her lab. She wanted to find out if the bacteria would grow faster on gel A or gel B. She placed a few bacteria on gel A and a few on gel B. After 24 hours, she observed how many bacteria were present on each type of gel.
What are the independent and dependent variables of this experiment??
Answers
Answer:
Explanation:
IV- temperature
DV- amount of bacteria placed on gel
Using the molecular data, make a general statement which compares the "rabbit-whale"
relationship to the "dog-pig" relationship. Does the cladogram agree with this statement?
Explain your reasoning
Answers
The comparison of the "rabbit-whale" relationship to the "dog-pig" relationship on the cladogram is linked based on their evolutionary relationships.
What is a Cladogram?This refers to the branching diagram that is used to show the link and the cladistic relationship that exists among different species.
Hence, we can see that based on the fact that rabbit-whale and dog-pig have a common ancestor and origin, on a cladogram, it can be stated and proven that they have an evolutionary relationship.
Therefore, the use of cladograms makes use of molecular data to show the homology level of nucleotide sequences of the genome.
Therefore, when the relationship of the "rabbit-whale" relationship to the "dog-pig" relationship was analyzed on the cladogram, it was found that they have a common ancestor.
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Does a virus have DNA, RNA, or both to carry its genetic material
Answers
Answer:
it was one of either it depends so Both
Explanation:
Explanation: took course
characteristics of contaminated water
Answers
Contaminated water is a type of water that is harmful to human beings due to the presence of harmful substances, pollutants, or impurities that make the water unsafe for drinking or other household uses. The characteristics of contaminated water can be identified through various indicators, which can either be physical, biological or chemical.
Physical indicators are visible and may include color, taste, and odor, while biological indicators are not visible and may include bacteria, viruses, and protozoa. Chemical indicators may include heavy metals, pesticides, and organic compounds, among others.
Physical Characteristics: Physical characteristics of contaminated water include cloudy or turbid appearance, unusual taste or odor, or discoloration of the water. The color may range from yellow to brown, blue to green, or even black.
Biological Characteristics: Biological characteristics of contaminated water include the presence of bacteria, viruses, or protozoa. These microorganisms can cause diseases such as diarrhea, typhoid, cholera, and dysentery.
Chemical Characteristics: Chemical characteristics of contaminated water include the presence of heavy metals such as lead, arsenic, or cadmium. Pesticides and fertilizers can also contaminate water and affect human health. Organic compounds like benzene and toluene can also be present in contaminated water, which can lead to health problems such as cancer and nerve damage.
Therefore, it is important to test water sources regularly to identify and monitor any contaminants that may be present. This can help prevent health problems associated with the use of contaminated water.
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explain four example of cybercrime
Answers
Answer: Hacking.
XSS: Cross-Site Scripting.
Denial-of-Service Attack.
Phishing Scam.
Spamming.
Explanation:
Why do you think that it is important for police to have corona virus vaccine?
Answers
Answer:
depends on the officer
Explanation: