Which of the following is not a benefit of wildfires to ecosystems?

A. Habitat loss

B. Under bush reduction

C. New growth

D. Plant regeneration

A molecule that serves to make reactions work

What type of immune response is initiated when a person becomes infected with viral flu? A. B cells activate T cells. B. T cells merge with B cells. C. B cells produce antibodies specific to the flu virus. D.

The process of cell differentiation is not well understood but involves the turning off or on of genetic information in the cell. a. True b. False

What happens when the concentration of salt molecules is lower outside the cell than inside

Thyroid hormones exert their effects on cells in a manner similar to steroid hormones; describe the mechanism of action of thyroid hormones (hint: they are an amine hormone).

Which of the following will a bacterium produce when a human gene is added to its genome? A) human plasmids that can be isolated from the bacterium B) The human protein coded for by the human gene C) a protein made up of both human and bacterial

Which type of mutation occurs reproductive cells and can be passed to offspring

Describe the main characteristic of a eukaryotic cell? Describe the main characteristic of a prokaryotic cell

The genetic code is based on sequences of three bases called

Explain an important thing to remember as you turn the high power objective into place