A mutagen is

A) a living thing that has undergone a mutation.

B) an agent that causes a mutation in DNA.

C) a mutation that has affected one gene.

D) a chemical that can poison living cells.

The correct answer is D

The uniformitarian principle was developed by:

Which of the following provide the most readily available energy?

Which of the following best explains what will occur when a population grows larger than the carrying capacity of its environment A) the birth rate will increase B) the death rate will increase C) the emigration rate will decrease D) the competition

All of the following enhance water transport in terrestrial plants except: a) hydrogen bonds linking water molecules. b) capillary action due to adhesion of water molecules to the walls of xylem. c) evaporation of water from the leaves.

Chemical reactions that release energy Question 6 options: will always explode. need catalysts to occur. often occur spontaneously. will not occur.

Match the amino acid (AA) with its correct side chain category: 1) proline A) acidic AA 2) histidine B) nonpolar AA 3) alanine C) basic AA 4) threonine D) polar AA 5) tryptophan 6) aspartic acid

In which structure of the female reproductive system are eggs priduced

In a forest, rabbits are the prey to owls. An increase in the number of rabbits in the forest would result in Group of answer choices A. an increase in the number of owls. B. an increase in the number of producers.

How are viruses different from bacteria Bacteria are heterotrophic while viruses are autotrophic. Bacteria are living organisms; viruses are not. Bacteria have a membrane bound nucleus while viruses do not.