in this bundle there are more than 5000 aqa a level biology questions and if you do every question and memorise the mark scheme you will get that A* without a doubt
(b) If a pond freezes over during the winter, goldfish can remain alive in the water under the
ice. Explain why they use the carbohydrate stores in their bodies much faster in these
conditions.
(c) What is the main difference between the way in which ATP is produced by oxidative
phosphorylation and the way in which it is produced in photosynthesis?
, 4. The diagram shows anaerobic respiration in yeast.
G lu c o s e [6 C ]
2ATP
2A D P
F r u c to s e b is p h o s p h a te [ ...... C ]
T rio se p h o s p h a te [3 C ] T rio s e p h o s p h a te [ 3 C ]
(T y p e 1 ) (T y p e 2 )
P h o s p h a te
N A D
R educed N A D
2A D P
2ATP
P y ru v a te [ ...... C ]
R educed N A D
N A D
X : .................... [ 2 C ]
CO 2
(a) Complete the boxes in the diagram to show:
(i) the number of carbon atoms in each molecule of fructose bisphosphate and in each
molecule of pyruvate;
(1)
(ii) the name of compound X.
(1)
Sir George Monoux Sixth Form College 4
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