A molecule that takes part in many biochemical reactions is NADP<sup>+</sup> - VCE - SSCE Biology - Question 16 - 2017 - Paper 1
Question 16
A molecule that takes part in many biochemical reactions is NADP<sup>+</sup>.
It is correct to state that:
A. NADP<sup>+</sup> becomes NADH when it is loaded.
B. NAD... show full transcript
Worked Solution & Example Answer:A molecule that takes part in many biochemical reactions is NADP<sup>+</sup> - VCE - SSCE Biology - Question 16 - 2017 - Paper 1
Step 1
A. NADP<sup>+</sup> becomes NADH when it is loaded.
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Answer
NADP<sup>+</sup> is reduced to form NADH when it accepts electrons and protons. Thus, this statement is correct.
Step 2
B. NADP<sup>+</sup> has a higher energy level when it is unloaded.
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Answer
This statement is not correct. When NADP<sup>+</sup> is unloaded, it is in its oxidized form, which is lower in energy compared to its reduced form, NADPH.
Step 3
C. energy is released when NADP<sup>+</sup> is converted to NADPH.
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Answer
This statement is incorrect. The conversion of NADP<sup>+</sup> to NADPH involves the absorption of energy as NADP<sup>+</sup> gains electrons and protons.
Step 4
D. NADP<sup>+</sup> carries additional energy when protons and electrons are added to it.
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Answer
This statement is correct. When protons and electrons are added, NADP<sup>+</sup> is reduced to NADPH, which is a high-energy molecule.
