Which characteristics correctly describe prokaryotic cells? (Select all that apply.)

A. have no nucleus

B. have a nucleus

C. have membrane-bound organelles

D. have no membrane-bound organelles

The gene Src normally is activated by extracellular signals called growth factors. When the growth factors are present, Src instructs the cell to divide. A mutant form of Src is found in many cancer tumors.

Where does lipids come from

Which of these best describes the process of gene flow? A) The movement of genes within a population. B) The strongest organisms survive and reproduce. C) The transfer of genes from one population to another.

While observing slides under a microscope, jack adjusts the microscopes mirror so that a circle of light can be seen. Which microscope is jack using?

5. What is the basic structure of a Silicate-Oxygen tetrahedron mineral

What is a non example of chloroplast

Whats a organelle you can see in a plan cell that you did not see in a animal cell?

Identify the pancreas as the source gland for insulin, and describe the function of insulin in maintaining blood sugar levels.

11a+9=4a+30 how do i solve for a

G select the true statements about protein secondary structure. the β-pleated sheet is held together by hydrogen bonds between adjacent segments.