2. During light independent (Dark) reactions of photosynthesis: A) CO2 is fixed

Question

2. During light independent (Dark) reactions of photosynthesis:

A) CO2 is fixed into carbohydrates

B) ATP is used to produce H2O.

C) ATP is used to produce NADPH.

D) H2O is oxidized to oxygen and hydrogen ions..

13. Which statement is true about cellular respiration?

A) You cannot obtain energy (ATP) from fat as the energy expenditure is too much B) You cannot obtain energy (ATP) from protein because of the energy expenditure C) You can obtain energy from both proteins and fat even though the initial energy expenditure is much

D) A, B, and C are all true statements

E) Neither A, B nor C is correct statement

14. Adenosine Triphosphate (ATP) is a transformed form of sun’s energy fueling cellular work

A) This statement is false as ATP is not ultimately derived from sun

B) This statement is true as all energy form in our solar system is derived from sun C) ATP is generated from carbohydrates and the sun has nothing to do with it.

D) I am a little confused by this question and answer choices.

20. T/F: If you deplete your glucose reserve (starvation), your body will obtain energy from your fat reserve (not in your review)

A) This is a true statement.

B) This is a false statement, protein is preferred source to fat.

21. T/F: Yucca (cassava) is a chemical form of sun’s energy in plant (not in your review)

A) This is a true statement.

B) This is a false statement

23. What is the net maximum number of ATP molecules that can be produced per glucose molecule during cellular respiration (not reviewed)?

A) 28-36 ATP

B) 4-14 ATP

C) 8-32 ATP

D) 2-40 ATP

E) 36-40 ATP

24. What is the minimum number of ATP molecules that can be produced per glucose molecule during anaerobic cellular respiration? (not in your review)

A) 36

B) 4

C) 8

D) 2

E) 38

Explanation / Answer

Answer for question number 2 : The correct answer is A (CO2 is fixed into carbohydrates)

Explanation : Corbon dioxide fixation during dark reaction/light independent reaction/calvin cycle is catalysed by an enzyme called RUBISCO, the enzymes that condenses carbon dioxide into acceptor called Ribulose 1,5- bisphosphate to form 3-phosphoglycerate. Dark reaction is dependent on the products of light reaction such as ATP and NADPH.

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