What is one reason that a cell needs to regulate flow across the membrane?

What is usually (but not always) related to the metabolic processes of living organisms in its organic form?

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes

In pea plants, yellow seed color (y) is dominant and green seed color (y) is recessive. based on the punnett squares, what are the chances that the offspring in the second generation will have green seeds?