Chapter 3: Introduction to Metabolism

Question 1

Oxidation

LEO the lion says GER

Answer 1

Oxidation is the loss of electrons (LEO: Lose Electrons Oxidation)

Question 2

reduction

LEO the lion says GER

Answer 2

reduction is the gain of electrons (GER: Gain Electrons Reduction)

Question 3

Endothermic vs. exothermic reaction

Answer 3

These describe heat changes in a reaction.
1. Endothermic:
* The reaction absorbs heat.
* Feels cold.
Example: Melting ice, cooking food.
2. Exothermic:
* The reaction releases heat.
* Feels hot.
Example: Fire burning, freezing water.

Question 4

endergonic vs. exergonic reaction

Answer 4

These describe energy changes in a reaction.
1. Endergonic:
* The reaction needs energy to happen.
Example: Building molecules, like in photosynthesis.
2. Exergonic:
* The reaction releases energy as it happens.
Example: Breaking down food, like in digestion.