Which best defines a diploid cell during meiosis? a. a cell that has double the number of chromosomes as the parent cell b. a cell that has half the number of chromosomes as the parent cell c. a cell that has double the number of chromosomes as the daughter cell d. a cell that has half the number of chromosomes as the daughter cell

What amino acid is coded for by this sequence after the mutation

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes

Lactase is essential for digesting lactose in milk. this enzyme is specific for this sugar. why? molecules and active sites vary in size; only properly sized molecules can fit. there is a precise compatibility between the active site and the lactose molecule. specificity refers to the action of the enzyme, such as hydrolysis, and relatively few molecules can be hydrolyzed. reaction-specific enzymes assume a fit by folding around the most numerous substrate molecules.