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A level Biology: Post your doubts here!
yeah but the question says intracellular transport right -
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A level Biology: Post your doubts here!
i think its because active transport requires energy and also takes place via proteins in the cell surface membrane therefore even if temperature does change, only the phospholipids are affected. -
A level Biology: Post your doubts here!
the answer for question 13 is B (i guess) because look; A - is partially true, the cell surface membrane and the membranes of the organelles allow intracellular transport but they also allow extracellular transport. because the term "extracellular transport" is not stated, im guessing that A is... -
A level Biology: Post your doubts here!
wait wait so the answer is A? -
A level Biology: Post your doubts here!
is the answer to question 14 A? -
A level Biology: Post your doubts here!
2100 is not the maximum number of hydrogen bonds. since there are two strands of DNA, we divide 700 by 2, which is equal to 350 base pairs. G-C pairs have three hydrogen bonds as opposed to two hydrogen bonds between A-T pairs. we assume that all the nucleotides are G-C to maximize the number...