What is the nucleolus.

A: the entire DNA found in a cell

B: the membrane surrounding the nucleus

C: a ball of fibers inside the nucleus

D: an information organelle that makes protein

A number of experiments have demonstrated that areas of the genome that are relatively inert transcriptionally are resistant to DNase I digestion; however, those areas that are transcriptionally active are DNase I sensitive.

If a female fruit fly heterozygous for red eyes (XRXr) crossed with a white-eyed male (XrY), what percent of their offspring would have white eyes?

When a helium balloon expands and the volume doubles what happens to the density of the helium inside it?

Where does the chemical energy released in a chemical reaction come from?

What controls activities in the brain such as breathing?

Which of these statements is true about heating up air in the lower atmosphere? A. It occurs mainly through radiant energy. B. It occurs through convection from Earth. C. It happens to a different extent over land and water. D.

How might a strawberry plant depend on birds? A. The birds provide shade to the strawberry plant. B. The birds eat insects that would destroy the plant. C. The birds eat the strawberries so the plant cannot reproduce anymore. D.

Which phase occurs directly after G1? A. S phase B. M phase C. Cytokinesis D. G2

Which describes the correct pairing of DNA bases? O A. A with T, and C with G O B. A with A, and G with G O C. A with G, and C with T O D. A with C, and T with G

How to have self control over heart rate?