PCAT

PCAT practice questions, page 5 of 12, with answer review and explanations.

Question 21

Blood flows from the mitral valve to the:

  1. left atrium
  2. aorta
  3. right ventricle
  4. left ventricle

Question 22

A female who is a carrier of an X-linked recessive disability produces an offspring with a normal male. What is the chance that the male offspring will have the disability?

  1. 0%
  2. 25%
  3. 50%
  4. 100%

Question 23

Energy for ATP synthesis is produced primarily by:

  1. NADH
  2. proton gradient
  3. ATP synthase
  4. Na +

Question 24

Which of the listed antibodies is released in response to an allergen?

  1. IgA
  2. IgE
  3. IgG
  4. IgM

Question 25

A cross between red bean (RR) and a blue bean (UU) yields all purple beans. How many purple beans would result from a cross between two purple beans?

  1. 0.25 of the offspring
  2. 0.50 of the offspring
  3. 0.75 of the offspring
  4. all of the offspring