Which observation proves that a cell is a prokaryote?

a. it does not have a cytoskeleton

b. it does not have a nucleus

c. it has a cell membrane

d. it has cytosol inside the cell

Cell division is triggered when cells reach a certain size because A. the surface area available for importing nutrients and exporting wastes is no longer sufficient. B. the large cell begins to crowd other cells. C.

Which hormone release causes the body to store excess glucose as fat? Select one: a. Insulin b. Glucagon c. Thyroid hormone d. Cortisol?

Im 25 words or fewer what do. you think Can be used as a dna sample

What type of joint allows twisting turning and sliding as in the vertebrae?

What is diastole? what is systole?

What is the function of a gene?

Explain the anthropogenic (man-made) impact on the Carbon Cycle.

Species are subdivided into smaller groups called subspecies. For people, the human species is subdivided into smaller groups called a. ethnic groups b. species c. breeding populations d. races e. all of the above

A frameshift mutation could result fromA) a base insertion only. B) a base deletion only. C) a base substitution only. D) deletion of three consecutive bases. E) either an insertion or a deletion of a base.

The first step a biologist takes when deciding how to study life is to