q: What ccurs when many muscles contract a little bit all at once?
Options:
- (A) heat production
- (B) heat loss
- (C) sweating
- (D) permineralization
- (E) hypothermia
- (F) resistance
- (G) cramping
- (H) heat energy
a: (A)... Explanation: Shivering occurs when many muscles contract a little bit all at once. Heat production is increased by shivering and non-shivering thermogenesis . Heat production occurs when many muscles contract a little bit all at once. That's why the answer is (A).

q: What happens when there are random changes in the genetic information of an organism?
Options:
- (A) New genetic variation
- (B) Cancer
- (C) cause people to become sick.
- (D) deadly and devastating
- (E) Identical twins
- (F) Random diseases
- (G) death and devastation
- (H) a tree falling
a: (A)... Explanation: Mutation creates new genetic variation in a gene pool. Mutations Mutations are random changes in the genetic information of an organism. Random changes in the genetic information of an organism creates a new genetic variation. That's why the answer is (A).

q: When cells start to divide uncontrollablly, they may form a what?
Options:
- (A) anemia
- (B) tissue
- (C) fever
- (D) cell
- (E) organ
- (F) fibroid
- (G) acid rain
- (H) illness
a: (F)... Explanation: Cells that divide uncontrollably may form a tumor, or abnormal mass of cells. For example, a fibroid is a tumor, a wart is a tumor, and cancers are tumors. Cells that divide uncontrollably may form a fibroid. That's why the answer is (F).

q: What does cricoid contain?
Options:
- (A) Bodily water
- (B) cellulum
- (C) cellulite
- (D) Energy
- (E) hydrocarbons
- (F) cellulose
- (G) cellular
- (H) layers of fat
a:
(F)... Explanation: Cartilage is a tough tissue that contains a protein called collagen. Membranes attached to the cricoid cartilage . Cricoid is a tough tissue that contains a protein called collagen. That's why the answer is (F).