Which statement is true of both active transport and facilitated diffusion?

A)

Both involve proteins in the cell membrane.

B)

Both occur in only one direction.

C)

Both require ATP.

Which statements are correct concerning human DNA? it contains 23 chromosomes it contains 46 chromosomes each strand contains the chromosomes from one parent each chromosome contains 23 genes

Somatotyping uses what to explain crime? A. Personality B. Hormones C. Body type D. Weather

Which is a better solvent of salt, based on the results? Why?

High concentrations of toxic heavy metals in estuaries are most likely found in the select one: a. water of the estuary b. air above the estuary c. estuary sediments d. water of the adjacent ocean e. air above adjacent land

What is the role of splindle fibers in mitosis

To test the effect of vitamin d on growth, two groups of rats were raised under identical conditions and fed the same diet. one of the groups received daily injections of vitamin d.

A researcher isolates a mutant variant of the bacterial translation factor ef-g. the mutation allows proper folding of the protein and binding of gtp, but does not allow gtp hydrolysis.

Which organ is part of two different systems?

2. Describe a flood along a coastline. What might cause this?

What kind of animals are found in the owl pellet ecosystem?