You would know a dividing cell was a plant cell rather than an animal cell if you saw that __________.

A substance moving from outside the cell into the cytoplasm must pass through __________.

Carbon dioxide and oxygen enter and exit a leaf by diffusion. Which structure(s) on a leaf allow(s) this process to happen?

At low temperatures, a particular enzyme catalyzes a reaction, but at a slow rate. At high temperatures, the enzyme is completely inactive. What statement best explains the difference in how temperature affects the function of this enzyme?

Which of the following plant cells would exhibit the most turgor pressure?

Bacterial cells are prokaryotic. Unlike a typical eukaryotic cell they __________.

In facilitated diffusion, __________ proteins provide openings in the plasma membrane for substances to flow through without changing structure, and __________ proteins allow passage of substances through the plasma membrane after undergoing a subtle change in shape.

Why is energy required for active transport?

Hydrophobic molecules __________.

Nitrogenous bases are classified as either purines or pyrimidines. Examples of purines are __________.