DNA helps a cell to become differentiated by

A preventing the nucleus from engaging in any functions.
B deleting potentially harmful genes.
C directing the cell to create certain proteins.
D allowing water to permeate the cell.

1. which of the following transport mechanisms utilizes energy? a. osmosis b. diffusion c. facilitated diffusion d. endocytosis

Which of these is not an example of molecular homology? 1. use of dna and rna as genetic material 2.use of glycolysis as the first step in cellular respiration in both plants and animals 3. the lack of an igf-1 gene in prokaryotes 4. the use of aldolase b to break down fructose in bacteria, plants and animals

What astronomers thought epicycles were correct?