The presence of cholesterol in the plasma membranes of some animal cells... A:Makes a membrane less flexible allowing more pressure from within the cell
B:Enable membranes to stay fluid more easily when cell temperatures drop.
C:Makes an animal more susceptible to heart disease.

Read the following scenario to answer the following question. in some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. applying the biological species concept, the sterility of ligers reveals that a. lions are probably a subspecies of tigers b. tigers and lions are the same species c. a new species called "ligers" is forming d. tigers and lions are separate species

Photosynthesis converts solar energy into what type of energy?

Explain how fossils scientists make discoveries about the lives of organisms and about how environments have changed over time. plz hurry up it time