Practice Quiz

MCAT Biology - Question List

Select how would you like to study

Study Mode Free Daily Question Test Mode
11. An endangered species is most vulnerable to extinction when it has which of the following characteristics?
  1. a high birthrate
  2. a large variety in its diet
  3. a small amount of competition
  4. a small amount of genetic diversity
See answer
12. The amount of water a plant has in its tissues is determined primarily by the balance of which of the following processes?
  1. runoff and root absorption
  2. respiration and photosynthesis
  3. precipitation and photosynthesis
  4. root absorption and transpiration
See answer
13. Which type of cell must contain a mutation in order for the mutation to be passed from a woman to her offspring?
  1. blood cell
  2. brain cell
  3. egg cell
  4. skin cell
See answer
14. In tomato plants, the tall vine allele (T) is dominant to the short vine allele (t). Two tomato plants are crossed. Among the offspring plants grown from seed, 45% have tall vines and 55% have short vines.What are the most likely genotypes of the parent plants?
  1. TT and tt
  2. Tt and TT
  3. Tt and tt
  4. tt and tt
See answer
15. Degenerative nerve diseases destroy nerve cells. These diseases can lead to paralysis by interfering with which of the following?
  1. transport of hormones that stimulate muscle cells
  2. production of ATP that is required by muscle cells
  3. transmission of electrochemical signals from the brain to muscle cells
  4. exchange of oxygen and carbon dioxide between neurons and muscle cells
See answer

Select how would you like to study

Study Mode Free Daily Question Test Mode