Darwin found fossils of marine organisms high in the andes mountains. what did this lead him to believe?

What is the function of the central nervous system? A. to gather information B. to carry a response to glands and muscles C. to receive stimuli from the environment D. to process information and form a response

Which type of feather disintegrates as it grows, releasing a talc-like substance to waterproof the feathers?

The purpose of a mordant in the Gram stain is to:a. remove the simple stain. b. make gram-negative cells visible. c. prevent the crystal violet from leaving the cells. d. make the bacterial cells larger. e. make the flagella visible.

Cholesterol is the precursor molecule for all steroids in the body. cholesterol is the precursor molecule for all steroids in the body. a. True b. False

Which statement regarding isocitrate dehydrogenase is false? a. It catalyzes a reversible reaction under physiological conditions. b. It catalyzes an oxidative decarboxylation. c.

How can I measure the ripeness of a banana through sugar content or softness for my science experiment?

Which species is this butterfly? Mystery butterfly 3 Butterfly dichotomous key A. Papilio glaucus B. Papilio polyxenes C. Danaus plexippus D. Colias philodice

Which describes an interaction in which two organisms that interact must use the same limited resources?

IF Avery, Macleod, and McCarty had found that samples of heat-killed bacteria treated with RNase and DNase transformed bacteria, but samples treated with protease did not, what conclusion would they have made

What is an eruption of ash, cinders, bombs, and gases from a volcano is called?