Which statement is true of both active transport and facilitated diffusion

a:Both require ATP

b:Both involve proteins in the cell membrane

c:Both occur in only one direction

d:Both move materials down a concentration gradient

Which statement best represents how structure relates to function? A.) Many tropical birds can be taught to speak? B.) Some insects live longer than others. C.) Great white sharks have sharp serrated teeth for tearing into their prey. D.

Kelp is what kind of protist

A student made this diagram after observing the organisms of a model ecosystem in a large terrarium. Flies Crickets Pill bugs Grass Marigolds Which food chain shows a path of energy flow in the student's model?

Based on these results, what did Mendel state in his law of independent assortment?

Which of the following are necessary for a seed to germinate? moisture content of seed must be at least 9% Moisture content of the seed must be less than 9% certain enzymes in the seed are activated temperature must be above 80 degrees temperature

Which term names the replacement of living cells with minerals to form a rock-like fossil of a living thing? A. mold fossil B. petrified fossil C. cast fossil D. trace fossil

What is the diffrence between working in a field or laboratory

What does the principle of descent with modification imply?

There is a high level of occupational inheritance. a. True b. False

Some types of aquatic frogs bury themselves in the mud and spend the winter hibernating at the bottom of the lake and pond. which characteristic of life does this behavior represent