Physiology Practice Test - Lecture Exam 1 Module 4

1. What is metabolism?
a. Sum of all chemical reactions in the body
2. What is catabolism?
a. Breakdown
3. What is anabolism?
a. Build up
4. What are nutrients?
a. Chemicals in food that the body needs
5. What are the six major types of nutrients?
a. Water
b. Carbohydrates
c. Lipids
d. Proteins
e. Minerals
f. Vitamins
6. What is kinetic energy?
a. Energy associated with matter in motion
7. What is potential energy?
a. Energy stored in matter through chemical bonds
8. What is an exergonic chemical reaction?
a. release energy, catabolic
9. What is an endergonic reaction?
a. Absorb energy, anabolic
10. What is activation energy?
a. The energy necessary to start a reaction
11. What factors influence the activation energy?
a. Temperature
b. Concentration
c. Enzymes
12. What do enzymes do?
a. Lower the activation energy
b. Type of catalyst that is not used up
c. Protein
13. What is synthesis?
a. 2 or more molecules come together
14. What is decomposition?
a. Molecules broken down
15. What is exchange?
a. Combination of synthesis and decomposition
16. If the concentration is greater on one side of a reaction can it reverse?
a. Yes some reactions are reversible
17. What are some properties of enzymes?
a. Specific - shape only fits specific substrate
b. Efficient - makes reaction fast (10mil to 10 bil x faster)