The first step in DNA replication occurs when the DNA molecule separates by using enzymes to break down the hydrogen bonds between the base pairs. What is the next step in DNA replication? A. DNA polymerase joins the individual nucleotides to make a complementary strand.

B. Enzymes produce two new complementary strands.

C. Helicase dissolves the nucleus.

D. DNA polymerase "proofreads" each strand to make sure the sequence is correct.

It has been said that veterinarians are the world's best doctors, since their patients cannot tell them what is wrong. what are some of the differences between human and animal medicine? what are the advantages and disadvantages of each?

Aresearcher has developed two stains for use with seed plants. one stains sporophyte tissue blue; the other stains gametophyte tissue red. if the researcher exposes pollen grains to both stains, and then rinses away the excess stain, what should occur? a) the pollen grains will be pure red. b) the pollen grains will be pure blue. c) the pollen grains will have red interiors and blue exteriors. d) the pollen grains will have blue interiors and red exteriors.

Which statement about the immune system is false? a. lymphocytes reduce inflammation, b. b cells remember specific pathogens. c. most white blood cells kill bacteria d. white blood cells are made in lymph nodes.