What size molecules can pass through a cell membrane by a process called passive transport?
Answers
Answer:
diffusion and osmosis
Explanation:
lipid_ soluble substance
through lipid baleyer
through protein channel
Transported proteins carry small substances like water, amino acids, and charged ions. One to fifteen angstroms is the range in molecule size that can pass through the membrane. The easier it is for a molecule to move across the cell membrane, the smaller it is.
What is cell membrane ?All cells have a cell membrane, also known as a plasma membrane, which separates the interior of the cell from the external environment. A semipermeable lipid bilayer makes up the cell membrane. The movement of materials into and out of the cell is controlled by the cell membrane.
Small molecules or ions can traverse the cell membrane passively without the cell providing any energy. The three basic types of passive transport are osmosis, assisted diffusion, and diffusion.
Gases like oxygen and carbon dioxide, as well as small hydrophobic compounds, quickly traverse membranes. Water and ethanol are examples of small polar molecules that can move across membranes, though more slowly.
Thus, The easier it is for a molecule to move across the cell membrane, the smaller it is.
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Related Questions
1- List the 3 functions of the Digestive System
2- list the 2 function of the exretory system
3- describe the path of food,beginning in the mouth
4- describe the path of urine formation begginning in the kidneys
5- how does the urinary system maintain homeostasis
Answers
Answer:
1. transportation, digestion, and absorption of food.
2. Remove and concentrate waste products from body fluids and return other substances to body fluids
3. Food starts to move through your GI tract when you eat. When you swallow, your tongue pushes the food into your throat.
4. Urine then flows through the nephrons, through a system of converging tubules called collecting ducts.
5. filtering out excess fluid and other substances from the bloodstream and secreting waste.
its biology, help please :)
Answers
Muslims arrived in india ____ century
a) 6 century
b) 7 century
c) 8 century
d) 9 century
Answers
Answer:
7th century
hope you get ur answer ❤️❤️
Hexokinase converts glucose into glucose-6-phosphate during the first phase of lactic acid production. Which is immediately produced as a result of hexokinase?
Answers
When hexokinase and Mg2+ are present, ATP phosphorylates glucose. In the presence of nicotinamide adenine dinucleotide phosphate, glucose-6-phosphate dehydrogenase (G6PD) converts (NADPH).
What is the function of the reaction that occurs when hexokinase phosphorylates glucose in the initial stage of glycolysis?Hexokinase phosphorylates glucose in the initial stage of glycolysis. Glucose would be able to diffuse past the plasma membrane and leave the cell if it weren't phosphorylated.
What role does glucose phosphorylation play in the initial stage of glycolysis, and what enzyme is involved in this process?In a nutshell, the hexokinase/glucokinase enzymes phosphorylate glucose after it has been delivered into cells [6]. Glucose-6-phosphate (G6P) can be used in the process of glycolysis to create ATP and NADH, stored as glycogen, or utilized by the body.
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Cellular Respiration Graphic organizer
Cellular Respiration
begins with
1. Glucose
which occurs
in the
which
produces
2 molecules of
ATP
15. Cytosol
which is broken
down during
and
6. Barwarte
2. Glycoluus
which is an
Anaerobic process
which is broken
down into
7.aerobic
which is required for the
because it does not require
which occurs in the
8
3
similar to
which produces a
net of
10
11
2 ATP
1
which
produces
Lactic
or
acid
energy carriers that
bring electrons to the
5. Carbon diode
12
Electron transport
chain
Word Bank:
1
ucose
cytoplasm
32 ATP
which occurs
in the
which produces a
net yield of
ycolysis
Krebs cycle
pyruvate
13.
14
(VAN
Mitochondrial 6 NADH
matrix
hanol
FADH,
Inner mitochondrial
membrane
mantotinn
Aceful na
Answers
Cellular respiration is a process involve sequences of metabolic reactions in which food molecules e.g. glucose, is broken down to produce energy in the form of ATP.
What is cellular respiration?Cellular respiration is the process by which cells of the body produce energy from the breakdown of food molecules using oxygen.
The steps in cellular respiration are as follows:
Glucose is broken down in the glycolytic cycle to produce 2 molecules of pyruvate and two net ATP moleculesThe two pyruvate molecules are converted to two molecules of acetylCoAEach of the two molecules of acectylCoA enters the citric acid cycle and is used to produce the reducing equivalents NADH and FADH with a net production of 2 ATP molecules.The reducing equivalents finally transfer their electrons to oxygen with subsequent production of ATPOverall, 32 ATP molecules are produced from one molecule of glucose.Therefore, cellular respiration is a process involve sequences of metabolic reactions in which food molecules e.g. glucose, is broken down to produce energy in the form of ATP.
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How do clastic rocks get different sizes of particles?
Answers
Answer:
Such material, called detritus, consists of fragments of rocks and minerals. When the energy of the transporting current is not strong enough to carry these particles, the particles drop out in the process of sedimentation. This type of sedimentary deposition is referred to as clastic sedimentation.
Answer:
Such material, called detritus, consists of fragments of rocks and minerals. When the energy of the transporting current is not strong enough to carry these particles, the particles drop out in the process of sedimentation. This type of sedimentary deposition is referred to as clastic sedimentation.
Explanation:
what gives a sea squirt it's unique structure and shape?
Answers
Answer: cylindrical belly shape
Explanation:
Something that is giving a sea squirt its unique structure and shape is the presence of a cylindrical bell-shaped sac-like body. With that shape and body, there is coming an inhalant and exhalant shiphon-like structures.
All of that is giving a sea squirt its shape and structure.
In class, we discussed the role that various processes can play in the human sexual life cycle. Which of the following best describes the role that meiosis plays in this life cycle?
Group of answer choices
a) Meiosis generates unique combinations of alleles in gametes
b) Meiosis restores chromosome number and activates the egg cell
c) Meiosis produces haploid cells with pairs of homologous chromosomes
d) Meiosis increases the number of cells in a growing organism
Answers
Meiosis is a form of cell division that occurs in sexually reproducing organisms. The correct answer is (a) Meiosis generates unique combinations of alleles in gametes.
Meiosis is a specialized cell division process that produces gametes with haploid chromosome numbers in animals and spores in plants. The diploid cells generated by fertilization are the result of haploid gamete fusion, ensuring that the species' diploid number is maintained. In eukaryotic cells, meiosis creates cells with half the normal number of chromosomes, which is the opposite of mitosis. Meiosis plays a crucial role in sexual reproduction, as it is responsible for creating gametes, the cells that merge to produce new offspring. It is a fundamental process that allows for genetic diversity by generating gametes with novel combinations of genetic material. Therefore, the answer is (a) Meiosis generates unique combinations of alleles in gametes.
Gametes are reproductive cells that are used in sexual reproduction. Gametes are produced by a process called gametogenesis, which includes meiosis. The gametes of males are called sperm cells, while the gametes of females are called egg cells. Gametes have haploid chromosome numbers, which is half the number of chromosomes found in other cells. As a result, when sperm and egg cells combine during fertilization, the resulting zygote has the normal diploid chromosome number.
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What type of scientist would be the best qualified to perform genetic engineering to pro- duce seed that are more productive in agriculture? A. biochemist B. geologist C. molecular biologist D. paleontologist
Answers
The type of scientist best qualified to perform genetic engineering to produce more productive seeds in agriculture would be a molecular biologist, the correct option is C.
Molecular biologists specialize in studying the structure, function, and interactions of molecules within biological systems, including DNA and genes. Genetic engineering involves manipulating the genetic material of organisms, which requires a deep understanding of molecular biology principles.
Molecular biologists have the expertise to identify and isolate specific genes responsible for desired traits in crop plants, such as increased productivity or resistance to pests or diseases. They can then modify or introduce these genes into target plants to achieve the desired outcomes, the correct option is C.
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When an object slides down a ramp with friction, the kinetic energy at the bottom of the ramp is not equal to the potential energy at the top. Why doesn’t this situation violate the law of conservation of energy?
Answers
Answer:
Explanation:
Law of conservation of energy states that energy can neither be created nor destroyed. Thus, in relation to the question, as the object slides down the ramp, the kinetic energy should increase at the same rate the potential energy is reducing in such a way that the kinetic energy of the object at the bottom of the ramp should be equal to the potential energy of the object at the top of the ramp (since the energy was been "transferred" as the object moved). However, this situation only occurs, as explained, in the absence of friction. In the presence of friction, some of the energy is used to overcome friction as the object moves down the ramp and as such there is an energy loss due to friction in the process which makes the kinetic energy at the bottom of the ramp not equal to the potential energy at the top. This also does not violate the law of conservation of energy since no energy was destroyed in the process (as all the energy involved can be accounted for).
Guys pls help me!!!!!!
Answers
Answer:
3
Explanation:
it's a mitochondrion
Answer: let's try B ( sorry if i get it wrong but i tried)
Explanation:
Please help me with this!
Answers
Phototropism occurs when a plant bends or grows in a specific direction in reaction to light. Shoots tend to migrate toward the light, while roots tend to grow away from it.
What is phototropism in plants?Phototropism, or the differential cell elongation of a plant organ in response to directed blue light, allows the plant to optimize photosynthetic light uptake in the aerial section as well as water and nutrient acquisition in the roots.Phototropism is classified into two types: positive and negative. Growth toward a light source is referred to as positive phototropism, while growth away from a light source is referred to as negative phototropism. Because plant roots need to extend deeper into the ground for plant stability, water, and nutrients, they display negative phototropism.To learn more about Phototropism refer,
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At rest, sedentary, and euhydrated state, the left ventricle pumps 5L/min of blood into the abdominal aorta then to the renal artery. The renal artery transports about 1L/min of blood into the interlobar artery while the interlobar vein transports the blood into the renal vein. The renal vein transports the blood away from the kidney. a. True b. False
What condition is NOT a characteristic of Type I or Type II diabetes mellitus? a. Increases glucose metabolism b. Metabolic acidosis c. Elephantiasis d. Increases protein metabolism in muscles e. Dehydration
Answers
The given statement in the question is true. During rest, the sedentary and hydrated state, the left ventricle pumps 5 L/min of blood into the abdominal aorta, and from there, it flows through the renal artery. Then, the renal artery carries approximately 1 L/min of blood into the interlobar artery, which is then transferred to the renal vein. Finally, the renal vein carries the blood away from the kidney.
There are two types of diabetes mellitus, i.e., Type I and Type II. The characteristic of diabetes mellitus includes increased glucose metabolism, metabolic acidosis, increased protein metabolism in muscles, and dehydration.
Option c is incorrect because elephantiasis is not a characteristic of Type I or Type II diabetes mellitus. Elephantiasis is a parasitic infection that results from blockage of the lymphatic vessels. The answer is option c.
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What flower only blooms every 100 years?
Answers
Answer:
Agave ocahui
Explanation:
The correct answer is the
Agave ocahui grows in Chicago
What is the best definition of plot? A. Who is in the story B. Where the story takes place C. What is happening in the story D. When the story takes place
Answers
Answer: C. What is happening in the story is the best definition of plot.
Explanation: I hope this helps!
what is the difference between a positive an a negative sanction?
Answers
Answer:
An action that rewards a particular kind of behavior is a positive sanction. A negative sanction is a punishment or the threat of punishment used to enforce conformity.
Explanation:
Edge 2021 100%
molecular biology binghamton how many cycles does it require to obtain the desired pcr product for the first time?
Answers
According to molecular biology the quantity of DNA used as an input and the intended PCR product yield. For a suitable yield, up to 40 cycles may be necessary if the DNA input is less than 10 copies.
The target sequence set by the primers starts to accumulate after three cycles. After 30 cycles, a PCR product single beginning molecule can yield many more as a copies of the desired sequence. The PCR product area in between the two primers has undergone one round of replication, resulting in two copies of the original gene region. The PCR product reaction may be continually cycles performed without the addition of additional enzyme since a heat-resistant polymerase is utilized.
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which population had the greatest density?
Answers
Answer:
China
Explanation:
it has greatest/highest density
The bird's foot delta in this region changes over time. What form this feature?
•river sediments
•underwater plants
•salt from salt water
•sand from the Gulf of Mexico
Answers
Answer:
River sediments
Explanation:
what life characteristic enables bats to identify the position of their prey a) excretionb) movement c)nutrition d)irritability
Answers
Answer:
I suppose the answer is d)
I know that bats identify the position of object by means of echolocation, so I guess it is connected with irritability
Which of the following are viruses unable to infect?
Answers
Answer:
non living things
Hope this helps :) !!!
A ligand is a Select one: a. type of drug. b. type of electrical stimulus. c. cholinergic synapse. d. substance that binds to receptor molecules at the surface of the cell.
Answers
Answer:
The answer is d d d d DD
Explanation:
Record details about what you observe…what do they look like?:
Answers
The vocal cords stretch across the opening of the larynx. True or false??
Answers
Answer:
True
Explanation:
Vocal cords are bands of smooth muscle tissue located in the larynx. When air passes through, the vocal cords vibrate.
Explanation:
The vocal folds, also known popularly as vocal cords, are composed of twin infoldings of mucous membrane stretched horizontally across the larynx. They vibrate, modulating the flow of air being expelled from the lungs during phonation.
the vascular cambium yields _____________inside relative to it.
Answers
Answer: Tree Trunk
Explanation:
How do proteases function?.
Answers
Proteases modify protein-protein interactions, control the destiny, location, and activity of numerous proteins, and produce new bioactive molecules.
Where are proteases used?Proteases are utilised by an organism for a variety of metabolic functions. We are able to digest the protein in meals thanks to serine and acid proteases found in the duodenum and stomach, such as pepsin and chymotrypsin. Blood serum contains proteases (thrombin, plasmin, Hageman factor, etc.)
How does digestion use protease?Proteases are released by the pancreas into the proximal small intestine, where they combine with proteins that have already been altered by gastric secretions and break them down into amino acids, which are then absorbed and utilised by the body as necessary.
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can someone help me with this please
Answers
(
Answer:
statement box : 1, 2 & 5
(
Explanation: the answer is there
4. A woman pushes a stroller with a force of 8.2 N and performs 28.7 J of work on the stroller. Over what distance was the
Force applied?
Answers
Answer:
3.5m
Explanation:
Given parameters:
Force applied = 8.2N
Work done = 28.7J
Unknown:
Distance through which the force was applied = ?
Solution:
Work done is the force applied on body to move it through a particular distance.
Work done = Force x distance
Now insert the parameters and solve;
28.7 = 8.2 x distance
distance = 3.5m
plant stem cell differentiation is affected by which two types of environmental factors
a) external
b) global
c) internal
d) local
Answers
Answer: a and c
Explanation: just took the test
which of the following statements is correct regarding lung sonography performed during an efast exam? a. the exam is started on the anterior chest in the second or third intercostal space. b. lung sliding excludes pneumothorax at that location. c. the probe should be positioned perpendicular to the chest wall between two adjacent ribs. d. all of the above e. a and b only
Answers
The exam is started on the anterior chest in the second or third intercostal space, lung sliding excludes pneumothorax at that location, and the probe should be positioned perpendicular to the chest wall between two adjacent ribs.
Pneumothorax :
A pneumothorax is a collapsed lung. It occurs when air leaks into the space between the lung and chest wall. This air pushes on the outside of the lung and makes it collapse. It can be a complete lung collapse or only a portion of the lung can collapse.
What are the Symptoms of Pneumothorax?
Shortness of breath, Fatigue, Sharp, stabbing chest pain that worsens when trying to breath in, Bluish skin caused by a lack of oxygen, A dry, hacking cough, Rapid breathing and heartbeat, etc.
The Answer is D. All of the above
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