Question

19. In cyclic electron transport,

Select one:

a. CO₂ reacts with RuBP.

b. water donates electrons and protons.

c. NADPH + H⁺ forms.

d. oxygen gas is released.

e. ATP is formed.

20. A pigment goes from an excited state to a ground state when a photon strikes electrons. This ground state is unstable. Electrons from isolated pigments tend to naturally go to an excited state, giving off heat or light in the process.

Select one:

True

False

21. When a molecule is oxidized in a cell,

Select one:

a. electrons are transferred from the original molecule to NADH or FADH₂.

b. A and C are correct.

c. electrons are transferred from the original molecule to NAD⁺ or FAD.

d. electrons are transferred from NADH or FADH₂ to the original molecule.

e. electrons are transferred from NAD⁺ or FAD to the original molecule.

23.

How do red and blue light differ from one another?

Select one:

a. Red is radiant, whereas blue is electromagnetic.

b. They have a different number of photons in each quantum.

c. They differ in intensity.

d. Their wavelengths are different.

e. They differ in duration.

24.

Patients with McArdle's Disease lack an enzyme in their livers that catabolizes glycogen. Compared to an unaffected individual you would predict that a patient with McArle's disease would ______.

Select one:

a. have increased breakdown of glycogen by proteaosomes.

b. have an enlarged liver because they accumulate glycogen.

c. have increased autophagy of glycogen.

25.

The Calvin cycle occurs in the thylakoid, using reducing power from NADH and phosphates from ATP. One molecule of Glyceraldehyde 3P exits the cycle for every CO₂ molecules fixed and is converted to glucose and other organic molecules.

Select one:

True

False

31.

An active site is

Select one:

a. the site where energy is added to an enzyme catalyst.

b. the part of the enzyme that binds with a substrate.

c. the part of the substrate that binds with an enzyme.

d. None of the above

e. the site where enzymes are found in cells.