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 is an environmental factor that affects skin color in humans? amount of food consumed amount of sunlight absorbed number of genes inherited number of linked genes

Is it legal to make a "rolling stop" at intersections that have stop signs? why or why not?

For a healthy adult, the largest percentage of daily water is

The process by which an object is subjected to a chemical or physical substance that kills all microorganisms on its surface is? called:

What are the four structures you produce proteins and their role in the cell

What would happen if capillaries were thicker?

Is light energy changed to cell energy in stage 1 of photosynthesis

What is the most important genetic factor influencing whether someone will develop osteoporosis? A. Age B. Exercise C. Gender D. Diet

What is one difference between a cell wall and a cell membrane? a. cell walls do not connect cell to cell. Cell membranes connect cell to cell b. only plant cells have cell walls. Only animal cells have cell membranes. c.

When cells divide during meiosis homologous chromosomes are randomly distributed to daughter cells and different chromosomes segregate what of each other?