Why do cells have plasma membrane?

A. To separate the inside of cell from its environment

B. To separate proteins from the nucleus

C. To define the size of cell

D. To distinguish plants from animals

Which of the following best describes acclimation? A. Populations adapt to changes in their environment over several generations, as alleles that function better in the new environment are selected for and become more common. B.

If the frequency of a particular allele that is present in a small, isolated population of alpine plants decreases due to a landslide that leaves an even smaller remnant of surviving plants bearing this allele, then what has occurred? A.

Do animals secrete hormones to break down food

Which reaction is exothermic? a reaction that absorbs energy from the environment a reaction that requires an activation energy a reaction that releases energy into the environment a reaction that does not involve a change in energy

Which measurement unit describes the amount of energy food contains?

Which muscle group has the largest increase in circumference when contracted? Why do you think this occurred?

You are caring for a client who is a refugee from haiti. the family has been displaced because of an earthquake in their country. the client has healing fractures on his right arm as well as fractured ribs.

What happens to enzymes when you boil them?

How is each sense organ able to transmit a nerve impulse?

Which of the following occurs when organisms interact with other living things and their environment