AAMC official prep

Question 1

Two factors that normally determine the blood pressure are

Answer 1

the cardiac output and the resistance to blood flow.

Question 2

Vasoconstriction, the narrowing of a vessel, restricts blood flow to an organ and can ______ blood pressure

Answer 2

increase

Question 3

Increased vasoconstriction is important in maintaining blood pressure during a

Answer 3

hemorrhage.

Question 4

Vasodilation increases _____ _____ to both the muscle during exercise and the skin during blushing.

Answer 4

blood flow

Question 5

Mutations are heritable changes in the sequence of the nucleic acid component of _____, and mutations that lead to unregulated cellular growth can lead to cancer.

Answer 5

chromosomes

Question 6

If an enzymes catalytic activity decreases with a change in pH, it is most likely d/t

Answer 6

change in 3D protein structure

Question 7

Fluid enters the blood stream with an increase in

Answer 7

plasma protein levels such as albumin

Question 8

Aldosterone, which is produced by the adrenal cortex, causes Na+ reabsorption by kidney tubules. Such a mechanism decreases

Answer 8

Na+ levels in the urine.

Question 9

The ability to produce ATP via ATP synthase is common to both ____ and ____ cells.

Answer 9

bacterial and human

Question 10

The most effective way to demonstrate necessity is to test for the occurrence of a specific outcome in the _____ of the agent whose necessity is being tested.

Answer 10

absence