Which of the following animals has a three-chambered heart?

A. garter snake.

B. dog.

C. African bullfrog.

D. trout.

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.

A nurse is teaching a school-aged child with juvenile idiopathic arthritis (jia) activities to prevent the loss of joint function. what should the nurse caution the child to avoid

During which process is DNA transferred from one bacterium to another bacterium by a virus? A. Transduction B. Binary fission C. Transformation D. Conjugation

The amount of matter changes when water changes from a liquid to a solid. True or false

Some chemicals that are used to stop bug infestations do not kill the insects. instead, they keep insects from developing past the larva stage. explain how preventing these insects to develope past the larva stage could stop an insect infestation.

Why is dna an important macromolecule

Why / how does dna become more compact

6. Would there be a net flow of water in one direction in the following situations? Explain your answers. a. Outside the cell: 25 M NaCl. Inside the cell: 25 M NaCI.

30% of the bases in a cricket are cytosine (C). What percent are T?

Why are elements and compounds classified as pure substances?