Cell Biology Quiz

What process is required for phospholipids to flip-flop across the lipid bilayer?

You have designed a drug able to transform skin cells into cells that secrete insulin. What accumulative aspect of the cell will the drug affect?

The specialized plant structure that stores pigments, water, inorganic ions and maintains turgor pressure is the

Cell theory or cell doctrine is based on some basic principles. Choose the description that best addresses these principles.

In animal cells, microtubules grow from

Eukaryotic cell membrane functions include (Check All That Apply):

• forming a barrier to separate extracellular and intracellular environments.

• cell-to-cell adhesion.

• cell signaling.

The integrity of proteins has been altered in a patient's body by high temperature, leading to the proteins being broken down immediately after synthesis. The best description of this is

Sodium concentrations are higher outside and glucose concentrations are higher inside the cell. Using the same membrane protein for Na+ and glucose transport, what is it called when a Na+ electrochemical gradient is used to drive glucose transport into the cell against its concentration gradient?

What feature of the plasma membrane is primarily responsible for the selective uptake and export of ions and molecules from the cell?

Animal cells are permeable to water and urea but NOT to sucrose. Initially, the inside of a cell contains 1 M sucrose and 1 M urea and the outside 2 M sucrose and 1 M urea. After the system reaches equilibrium, what changes are observed?