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large molecules and charged molecules move across a cell membrane through "facilitated diffusion." That is to say, a transport protein in the plasma membrane of the cell is used (with the aid of adenosine triphosphate, or ATP) to move the substance from one side of the membrane to the other.
This method is actually the basis upon which all cell function is based, from generating and using energy, to keeping the cell isotonic to its environment.
Lesly Jaskolski
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∙ 14y agodigestion seperates the amno acids in the food protein. blood sends the amino acids to every cell in the body. the cells put these amino acids together again. they become proteins. the cells also put together the amino acids made by the body.
Wiki User
∙ 11y agoNo they cannot because they are too big and are also polar.
they diffuse through the cell membrane using the proteins channels in the cell plasma membrane in a process known as facilitated diffusion.
Wiki User
∙ 12y agoIt is mainly due to the amino acids.
What happens is as the sugars and acids are entering the cells the force of gravity pushes them, or rather pulls them, away from the cell. But the AMINO ACIDS are very 'strong' and they link with the sugars to form a strong chemical bind. This then makes them strong enough to enter the cell.
For more information look at chapter 2 of my book 'Why, how, when and where'
I am a writer and I write many books that answer questions like this.
I HOPE THIS ANSWER CAME IN HANDY!!!
Wiki User
∙ 13y agosecondary active transport is used only in some instances into cells lining the intestinal walls - otherwise amino acids cross peripheral cell membranes by facilitated diffusion.
Wiki User
∙ 12y agoThey are stripped of the amine group through deamination, converted to either acetyl CoA or Pyruvate depending on the structure of the amino acid and enter respiration.
Wiki User
∙ 12y agoAmino acids are synthesized within cells. They do not need to enter from outside
Wiki User
∙ 10y agothey eat through it
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How can energy be obtained from amino acids?
When you eat foods with proteins, your body breaks down the proteins into amino acids, then combines those amino acids to make the proteins it needs. Meat products tend to have more amino acids, so are naturally more beneficial to your body. Some substitutes are possible, except they do not always have the amino acids you need.
What is FADH?
FADH2 (Flavin Adenine Dinucleotide) is an electron accepter that is utilized in cellular respiration. FADH2 is produced during the Krebs cycle of cellular respiration. It then brings the electrons to the cytochrome complex. Electrons accepted by FADH2 enter the cytochrome complex later than electrons accepted by NADH, and therefore produce less ATP.
When fats are metabolized the fatty acids enter the reactions of the?
Beta oxidation process
What is beta oxidation?
the break down of fatty acids so that they can enter the Krebs Cycle in cellular respiration
Definition of solute pumping?
"Solute pumping allows a molecule that cannot regularly cross the lipid bilayer to enter the cell by way of a protein channel, however solute pumping requires ATP to change the shape of the protein channel to allow the molecule to pass through, therefore it is a form of active transport."
Where does glucose an oxygen come for to react in cellular respiration?
Glucose and oxygen enter a cell's cytoplasm for aerobic cellular respiration.
What stage of cellular respiration do fats proteins and carbohydrates enter the metabolic pathway?
They enter the metabolism later in the process of respiration.
Does oxygen can enter the atmosphere during cellular respiration or photosynthesis?
Oxygen can enter the atmosphere during celluar respiration, because if it enters photosynthesis, how about the other organisms?
How does protein in food become protein in the body?
Proteins are made of molecules called amino acids. When proteins enter the Body, they are broken up into amino acids that are more easily absorbed by the Body.
What would happen to the cellular level if vegetarians didn't consume all the amino acids they need?
Different amino acids and proteins serve different suposes to the body and to the cells of the body. Proteins are the key component to building muscle. Amino acids and proteins also allow for transport of materials in and out of the cellular membrane. If not working properly, harmful substances usually blocked could enter the cell, or waste could build up within the cell, both of which would cause damage to the cell and/or surrounding cells and membranes. A lack of proper nutrition can also cause fatigue and weakness of the cells.
How can energy be obtained from amino acids?
When you eat foods with proteins, your body breaks down the proteins into amino acids, then combines those amino acids to make the proteins it needs. Meat products tend to have more amino acids, so are naturally more beneficial to your body. Some substitutes are possible, except they do not always have the amino acids you need.
Which nutrients enter the bloodstream?
Amino acids, mono-sugars, fatty acids, glycerol, minerals and vitamins enter the blood stream. They enter from the portal venous system. You get amino acids from the protein digestion. You get mono-sugars from the carbohydrate digestion. You get the fatty acids and glycerol from the digestion of the fats. Vitamins and minerals need no digestion, before absorption.
What prouduct is needed for cellular respiration?
Cellular respiration requires both glucose and oxygen. Glucose provides the energy for the cell and oxygen is required to be the final electron acceptor so that aerobic respiration can happen. Other molecules can enter cellular respiration and be broken down, but glucose is considered the start of this process. Oxygen is also not required, but if it is not present, then fermentation will run and this process is not nearly as efficient as aerobic respiration.
Where can Amino acids enter the metabolic pathways?
My test says citric acid cycle, acetyl coA and pyruvate
What happens glycolysis?
The pyruvates enter the mitochondria to further undergo cellular respiration. The ATP molecules are used by the cell.
Does cellular respiration release glucose?
Yes - glucose is broken down in the first step of cellular respiration. This stage is known as glycolysis and occurs in the cytoplasm. Cellular respiration begins with glucose and ends creating ATP.
How are amino acids different from one another?
amino acid molecules are water soluble meaning they cannot enter the cell. Fatty acid molecules CAN enter the cell.
