Which term describes the difference in the concentrations of a substance across a cell's membrane?

concentration gradient

molecular concentration

diffusion membrane

concentration membrane

What is enzyme in a sentence?

The nucleus: a. directs cellular activity and stores hereditary information. b. modifies proteins that will be shipped elsewhere in the organism. c. synthesizes lipids and detoxifies molecules. d.

You should do more paraphrasing than any other type of listening

What type of relationship does a cat and tapeworm have?

How does fertilization occur in angiosperms? In your explanation, use the correct vocabulary to refer to the male and female parts of a plant.

What percentage of water is lost through the respiratory system? 5 to 10 percent 10 to 20 percent 35 to 50 percent 50 to 75 percent

HURRY! The cell membrane is selectively permeable because of its molecular structure. Based on this, which one of these would NOT diffuse directly through the cell membrane?

What is the net force on 2-kg skateboard accelerating at a rate of 2m/s2?

Which of the following is one effect storm waves have on a beach?

What is the process known as in which there is a change in one form such as a tadpole into a frog?