Biology Quiz on Krebs Cycle and Photosynthesis

The compound that enters the Krebs cycle as a reactant is (Hint: Think Transition Step)

• PGAL

• acetyl CoA

• ATP synthase

• pyruvate

• ATP

Tags

NGSS.HS-LS1-7

The process of phosphorylation:

• adds a phosphate group to a molecule.

• may energize the target molecule.

• All of the answer choices are correct.

• may change the shape of the target molecule.

• removes a phosphate group from a molecule.

Glycolysis does not require:

• ATP.

• glucose.

• enzymes.

• oxygen.

• NAD⁺.

Tags

NGSS.HS-LS2-3

Alcoholic fermentation:

• produces far less ATP than aerobic respiration.

• All of the answer choices are correct.

• produces carbon dioxide.

• produces ethanol.

• is carried out by yeasts.

Tags

NGSS.HS-LS2-3

Noncompetitive inhibition of enzymes occurs

• when the product, instead of the reactant, of a reaction binds to the active site.

• when a substance binds to an enzyme at a site away from the active site.

• when a cofactor, instead of a reactant, binds to the enzyme active site.

• when a substance other than the substrate binds at the active site of an enzyme.

• by blocking the production of an enzyme.

Examples of accessory pigments for photosynthesis are

• mitochondria and chlorophyll a.

• chlorophyll a and carotenoids.

• chlorophyll a and chlorophyll b.

• carotenoids, chlorophyll b, and chlorophyll a.

• chlorophyll b and carotenoids.

What is released at each step in an electron transport chain?

• energy

• photons

• carbon dioxide

• ultraviolet wavelengths

• electrons

Tags

NGSS.HS-LS1-7

The primary pigment molecule needed for photosynthesis is

• glucose

• carbon dioxide

• chlorophyll a

• carotenoid

• chlorophyll b

Photosynthesis is

• a chemical process not dependent on chlorophyll.

• a set of reactions that produces water and carbon dioxide.

• not an oxidation-reduction reaction.

• None of the answer choices are correct.

• an energy transfer process that produces glucose and oxygen.

Tags

NGSS.HS-LS2-5

NGSS.HS-LS1-5

An example of a poison that kills by interfering with ATP production is

• cyanide

• carbon monoxide

• arsenic

• DNP

• All of the answer choices are correct

Tags

NGSS.HS-LS1-7