Which chemical in tobacco smoke binds to hemoglobin, causing red blood cells to carry less than their normal load of oxygen?

Biological term for an organism that is capable of both heterotrophy and photosynthesis

List the events involved in an action potential.

Researchers think the cheetah population in Africa experienced extremely low numbers around 10,000 years ago, and then also again around 100 years ago. During both times, the low numbers rebounded back.

What causes diffusion? i have a test to study for in biology and the only thing i dont get is what causes diffusion.?

Artificial plant hormone are boon to farmer. do you agree or not. why

In humans, long eyelashes (L) are dominant to short eyelashes (l) and wet ear wax (W) is dominant to dry ear wax (w). Assume the genes for eyelash length and ear wax consistency are on different chromosomes and assort independently.

What characteristics distinguish prokaryotic and eukaryotic cells A. Eukaryotes have membrane-bound organelles; prokaryotes do not B. Eukaryotic chromosomes are linear; prokaryotic chromosomes are circular C.

Which of the following is a major difference between lactic acid in alcohol fermentation?

What happens when two organisms attempt to occupy the same niche?

How many variables are tested in any controlled experiment?