AP Biology Unit 4 Energy Review

Front

What is negative feedback in glycolysis?

Back

A regulatory mechanism where the end product of a metabolic pathway inhibits an earlier step, preventing the overproduction of ATP.

Front

What is the role of NADH in cellular respiration?

Back

NADH acts as an electron carrier, transporting electrons to the electron transport chain, and is involved in the reduction and oxidation processes.

Front

What distinguishes C3, C4, and CAM plants?

Back

C3 plants perform the Calvin cycle in the same cells where photosynthesis occurs; C4 plants spatially separate the Calvin cycle; CAM plants temporally separate the Calvin cycle.

Front

What wavelengths of light do plants absorb for maximum energy?

Back

Plants primarily absorb violet and red wavelengths for photosynthesis.

Front

Define the Calvin cycle.

Back

A series of biochemical reactions in photosynthesis where carbon dioxide is converted into glucose using ATP and NADPH.

Front

What is the significance of the Krebs cycle?

Back

The Krebs cycle is crucial for energy production, generating ATP, NADH, and FADH2 through the oxidation of acetyl-CoA.

Front

Explain the concept of temporal separation in CAM plants.

Back

CAM plants open their stomata at night to fix CO2, storing it as malate, which is then used during the day for photosynthesis.

Front

What is the function of ATP in cellular respiration?

Back

ATP serves as the primary energy currency of the cell, providing energy for various cellular processes.

Front

Describe the process of oxidative phosphorylation.

Back

Oxidative phosphorylation is the final stage of cellular respiration where ATP is produced using energy from electrons transferred through the electron transport chain.

Front

What is the difference between reduction and oxidation?

Back

Reduction involves the gain of electrons or hydrogen, while oxidation involves the loss of electrons or hydrogen.