Which mechanism requires energy?

A. diffusion of oxygen into a red blood cell

B. diffusion of ions through a potassium channel

C. osmosis

D. exocytosis

Classify the algae Volvox, Ulva, and Chlamydomonas based on their cellularity.

Gelatin ... Group of answer choices A. is a breakdown product of pectin B. gives gummy bears their chewiness C. is obtained from animals A and B are correct. B and C are correct.

Healthy fitness routines are only possible in certain living environments.

Give any three difference between manure and fertilizers

During filtration, anything that is small enough to pass through all three layers of the filtration membrane will become part of the filtrate. Sometimes, the least porous layer of this membrane becomes clogged and then glomerulonephritis may occur.

Cell differentiation refers to: a) cell organelles with different structure b) all the functions inside a cell c) the difference between plant cells and animal cells d) different functions inside an organism

Identification and location of genes on chromosomes that might affect cholesterol metabolism has been difficult because many of the genes that affect this trait interact, a phenomenon that is called epistasis. T or F?

What is the role of CdKs?

How many chromosomes in a human

Which term refers to a species creating more offspring than can possibly survive?