Approximately two-thirds of the mass of a cell is water, and the water is important to maintain the cell's integrity. what would happen to a plant cell during a period of severe drought?

How does natural selection change thephenotypes within a population over time?

What does polymerase chain reaction (pcr) do? o a. separates dna fragments by size o b. cuts a dna sample into fragments o c. provides an overall picture of a person's chromosomes o d. makes more copies of a sample of dna

Chloroplasts and bacteria are in size. a. similar b. at different ends of the size range c. exactly the same d. none of these