DC Bio Ch. 7, 8, and 9 Review

Front

What is the function of cholesterol in the cell membrane?

Back

Cholesterol stabilizes the cell membrane, preventing it from becoming too solid or too fluid.

Front

What does an enzyme do to the activation energy of a reaction?

Back

An enzyme lowers the activation energy required for a reaction to occur.

Front

What is the difference between endergonic and exergonic reactions?

Back

Endergonic reactions require energy input (anabolic), while exergonic reactions release energy (catabolic).

Front

What are the main stages of aerobic cellular respiration?

Back

Glycolysis, Citric Acid Cycle (Krebs), and Electron Transport Chain.

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower solute concentration compared to another solution, causing cells to swell.

Front

What is the role of ATP in cellular processes?

Back

ATP serves as the primary energy currency of the cell, providing energy for various biochemical reactions.

Front

Define glycolysis.

Back

Glycolysis is the metabolic pathway that converts glucose into pyruvate, producing ATP and NADH.

Front

What is the Citric Acid Cycle (Krebs Cycle)?

Back

The Citric Acid Cycle is a series of chemical reactions used by all aerobic organisms to generate energy through the oxidation of acetyl-CoA.

Front

What is the significance of NADH in cellular respiration?

Back

NADH is an electron carrier that transports electrons to the electron transport chain, facilitating ATP production.

Front

What is the difference between anabolic and catabolic reactions?

Back

Anabolic reactions build larger molecules from smaller ones (require energy), while catabolic reactions break down larger molecules into smaller ones (release energy).