Why do plants and animals need nitrogen

Ras is a GTP-binding protein involved in cell proliferation (division). In its active form, with GTP bound, Ras activates cell signaling pathways that promote cell division. Mutations in the gene that encodes Ras can lead to cancer.

In meiosis, the original cells

The lava released by a volcanic eruption separates two populations of a species of monkey. What does this represent? biological isolation geographical isolation temporal isolation anatomical isolation

If a trait had no effect on an organism's fitness what would happen to the allele for that trait

Which sentence describes an object that has kinetic energy? A seagull sits on top of a fence post. A beach ball is round. A radio has batteries with stored chemical energy. A boat sails across the ocean.

What does a d u k a r y o t e have that a prokaryote does not

In The US - Which states had the clearest skies

A 25-year-old client at 22 weeks' gestation is noted to have proteinuria and dependent edema on her routine prenatal visit. which additional assessment should the nurse prioritize and alert the rn or health care provider?

Vitamin D-3 is synthesized in the skin in response to sun exposure. Question 5 options: a. True b. False

Which is an abiotic factor that affects a freshwater ecosystem? A. The number of fish B. The competition for food C. The amount of light D. The number of predators