Lec. 13 - Cellular Energy

Question 1

What is Gibbs Free Energy?

Answer 1

GFE is a thermodynamic quantity that measures the max amount of useful work that can be extracted from a thermodynamic system under constant temp and pressure.

Question 2

Explain the factors affecting enzyme reaction rate.

Answer 2

The factors affecting enzyme reaction rate are substrate concentration, enzyme concentration, pH level, temperature, enzyme inhibitors,, and cofactors and coenzymes.

Question 3

Describe the purpose of cellular respiration.

Answer 3

The overall purpose involves a series of biochem. reactions like glycolysis, pyruvate oxidation, krebs cycle, and the ETC.

Question 4

Explain oxidation/reduction reactions.

Answer 4

Oxidation refers to the loss of electrons by a substance or an increase in its oxidation state. Reduction refers to the gain of electrons by a substance or a decrease in its oxidation state.