What happens during synapsis in meiosis?

gametes fertilize

DNA replicates

nuclei divide

tetrads form

What property of a virus makes it useful for making transgenic organisms?

Nitrogen fixation is A. the conversion of gaseous nitrogen into an organism friendly form (ammonia (NH3). B. preplanned setting of atmospheric levels of nitrogen at 78% C. stabilizing elemental nitrogen into a gaseous two-atom molecule (N2) D.

An enzyme is a large what molecule? nucleic acid polysaccharide protein carbohydrate

Explain why tropical rain forests contain a large variety of plants and animals

The Gram-positive rod that is also acid-fast and is a human pathogen is A. Corynebacterium diptheria. B. Mycobacterium tuberculosis. C. Streptococcus pyogenes. D. Listeria monocytogenes.

Select the atoms that are likely to lose electrons to form cations: A. Iodine (I) B. Lithium (Li) C. Bromine (Br) D. Potassium (K)

How does a law differ from a theory? A. A law is a theory that has been proven to be true and universal. B. A theory is a group of hypotheses that prove a law is true. C. A law is a statement of fact, but a theory is an explanation. D.

Can someone give me a high school level science fair projects with something to do with bones?

The storage of heat in the lower layer of the atmosphere due to certain gases absoring heat is called

A red blood cell is 8 μm in diameter. If drawn 100 times larger than its actual size, what diameter will the drawing be in mm? A. 0.08 mm B. 0.8 mm C. 8 mm D. 80 mm