AP Biology Cell Energetics

What are the products of the light reaction directly needed by the Calvin cycle in photosynthesis?

• H ions and carbon dioxide

• Photons absorbed by chlorophyll

• FADH₂ and Oxygen

• ATP and NADPH

What powers the ATP synthase enzymes in mitochondria and chloroplasts?

• The energy absorbed during the light reactions.

• The electronegativity of oxygen

• Energy released by breaking the chemical bonds in glucose

• The diffusion of hydrogen

An enzyme's active site

• is determined by the proteins primary, secondary, tertiary and quaternary structure.

• is specific to a particular substrate

• may be blocked by a competitive inhibitor

• all of the above

The light dependent reactions make the following products

• ATP and NADH

• ATP and NADPH

• ATP and FADH2

• all of the above

During the Calvin Cycle

• ATP from the light dependent reactions is used to make glucose

• NADH from the light dependent reaction is used to make glucose

• 1 ATP molecule is generated by one turn

• extra ATP is used to regenrate CO2

Which process is the first step of all energy producing metabolic pathways?

• Glycolysis

• Krebs Cycle

• Calvin Cycle

• ETC

Which of the following is the correct order for aerobic cell respiration?

• Glycolysis, Krebs Cycle, Pyruvate Oxidation and ETC

• Glycolysis, Pyruvate Oxidation, Krebs Cycle and ETC

• Pyruvate Oxidation, Krebs Cycle, ETC and Glycolysis

• ETC, Pyruvate Oxidation, Glycolysis, and Krebs Cycle

Tags

NGSS.HS-LS1-7

Which stage of Aerobic Cell Respiration produces the most ATP?

• Glycolysis

• Pyruvate Oxidation

• Krebs Cycle

• ETC and oxidative phosphorilation

Tags

NGSS.HS-LS1-7

Which is the final electron acceptor in aerobic cellular respiration?

• Carbon Dioxide

• Oxygen

• Rubisco

• Glucose

Tags

NGSS.HS-LS1-7

How does the active site of an enzyme determine the substrate for that enzyme?

• The active site has the right polarity to interact with the substrate.

• The active site is hydrophobic and interacts with other hydrophobic amino acids on the substrate

• The active site has a specific shape that fits the shape of the substrate

• The active site uses energy to form covalent bonds with the substrate