Why do cells have a plasma membrane?

to separate proteins from the nucleus

to define the size of the cell

to separate the inside of the cell from its environment

to distinguish plants from animals

What level of threat might the development of this volcano post humans

Which of these sources of energy have not acquired energy from sun? A. Petroleum B. Wind C. Coal

in an experiment you found two proteins (protein x and protein z) with similar size and sequence homology. Two domains of both proteins are nearly identical, but each possesses adifferent sequence in another domai.

3. If a bar magnet's neutral region is broken in two, what will most likely occur? A. Neither segment will have a north or south pole. B. The segment that's longer will have a north and south pole. C.

Which structure transports water and nutrients from Roots to the next of the plant

For which types of microbes would a microbiologist employ living host cells to support their growth?

What is the action of the binding of muscarine to its receptors in the digestive system?

A female impala has one or two calves and then spends months feeding and protecting them. a female salmon lays thousands of eggs and then returns to the ocean. what are some advantages from each type of life cycle?

What advantage does the membrane bound organelles give a eukaryotic cell over a prokaryotic cell? 1. The membrane bound organelles allow for multiple reactions to occur in the cell at the same time 2.

What is the relationship between earth, the sun, and the moon in space