BIO PSYCH CHAPTER 9 QUIZ

C

Which example demonstrates ectothermic behavior? a. A dog panting on a hot day b. A group of birds roosting together at night c. A turtle basking on a sunny log d. A person shivering in a cold house

B

Which molecule is known as antidiuretic hormone? a. Aldosterone b. Vasopressin c. Angiotensin II d. Rennin

A

Which statement correctly describes osmotic pressure? a. The tendency of a solvent to move across a membrane in order to equalize the concentration of solute on both sides of the membrane b. The spontaneous spread of solute molecules through a solvent c. The force of solute against a cell membrane d. The tendency of a solvent to sink due to higher density.

C

_______ refers to the active process of maintaining a relatively stable internal environment. a. Motivation b. Endothermic c. Homeostasis d. Negative feedback

B

A general feature of homeostatic mechanisms is a. simplicity. b. redundancy. c. invariability. d. universality.

D

Animals whose body temperature is regulated mainly by internal bodily processes are called a. homeotherms. b. poikilotherms. c. ectotherms. d. endotherms.

D

The brain responds to hypovolemia by triggering both thirst and hunger for a. protein. b. carbohydrates. c. sugar. d. salt.

D

The response to increase in the salt concentration of the extracellular solution is called _______ thirst. a. hypovolemic b. hypotonic c. osmoreceptive d. osmotic

C

The two main kinds of thirst are _______ thirst and _______ thirst. a. osmotic; hypervolemic b. isotonic; isovolemic c. osmotic; hypovolemic d. hypotonic; hypervolemic

C

Thermoregulation is considered a negative feedback system because a. it requires such a great deal of energy. b. larger temperature changes trigger smaller responses. c. restoring the desired temperature turns off the response. d. Hot and cold temperatures are the opposite of each other.