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AQA A2 Biology Unit 4 Chapter 4 Respiration 1. - The Student Room
When protons (H+) pass through the ATP synthase protein, they release energy. This energy is used to synthesise ATP. (i) (ii) Two other transv»rt proteins are shown in the diagram Describe their function. (2 marks) People who suffer from chronic fatigue syndrome have mitcxhondria in which some of these transport proteins are damaged.
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Respiration Help- Electron Carriers Sequence Help Needed.
So the second last carrier is W, because when inhibitor A was added, X and Y where reduced, and W and Z were not. But We know that Z is at hen end of the sequence, hence W must be the second last carrier, because it gave its electron to Z, hence is oxidized, and the Z is able to give its electron away to the next electron carrier in the ...
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Biology AQA Alevel help! Diagram phospholipids! - The Student Room
The fatty acids tails need to be vertical and parallel to the squiggles of the carrier protein. 0 Report ...
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AQA A LEVEL BIOLOGY - Carrier Proteins vs Channel Proteins
My current conception: Carrier and channel proteins have quite similar functions in facilitated diffusion. However, ions and charged particles bind to specific channel proteins whereas carrier proteins carry large, water-soluble substances across the membranes. Furthermore, carrier proteins can also move substances across the membrane via ...
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A level Biology Co-transport - The Student Room
Some of these cells have membranes with a carrier protein called NHE3. NHE3 actively transports one sodium ion into the cell in exchange for one proton (hydrogen ion) out of the cell. Use your knowledge of transport across cell membranes to suggest how NHE3 does this. [3 marks] MARK SCHEME ANSWER: 1. Co-transport; 2. Uses (hydrolysis of) ATP; 3 ...
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Protein carrier molecules - The Student Room
Protein carrier molecules. Kiesha. 10. Can anyone help me with this question please: Glucose, and no other ...
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Beetroot Evaluation AS Biology - The Student Room
Most of them are also gated – so can be opened or closed-Carrier proteins – shaped so that a specific molecule can fit into them at the membrane surface – when molecule fits the protein changes shape to allow the molecule through to the other side Active transport:-Definition: refers to the movement of molecules or ions across membranes, which uses ATP to drive protein ‘pumps ...
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Protein Channels/ Carrier proteins - The Student Room
Can someone please explain the difference between a protein channel and carrier proteins. In my book it says that intrinsic proteins act as carriers to transport water soluble molecules. But for facilitated diffusion it says that proteins channels transport water soluble molecules across the phospholipid bilayer.
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6 Marker on protein synthesis - The Student Room
As the cytoplasm contains carrier molecules which attach to specific amino acids, the ribosomes attach the amino acids from the carrier molecules together in the order given by the code from the mRNA. This creates the polypeptide chain. Finally, the polypeptide chain is folded to create the desired protein. When making enzymes it is folded to ...
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Biology A Level 2020 Exam Question - The Student Room
Hi, does anyone have the following question: Draw phospholipids on figure 2 to show how the carrier protein, SGLT1, would fit into the cell surface membrane. I think it is from the 2020 A Level paper, it is in the assessment material released today, but I don't have figure 2.
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