BS Cell Biology and Genetics 3

Question 1

What is the function of the cell membrane?

Accepted Answer

To regulate the movement of substances in and out of the cell

Answer

The cell membrane is a selectively permeable barrier that controls which substances enter and exit the cell.

Question 2

What is osmosis?

Accepted Answer

The diffusion of water across a semipermeable membrane

Answer

Osmosis is the passive movement of water molecules across a semipermeable membrane from a region of lower solute concentration to higher solute concentration.

Question 3

Which organelle is responsible for processing and packaging proteins for secretion?

Accepted Answer

Golgi apparatus

Answer

The Golgi apparatus modifies, sorts, and packages proteins and lipids for transport to their final destinations inside or outside the cell.

Question 4

What is the difference between prokaryotic and eukaryotic cells?

Accepted Answer

Prokaryotes lack a membrane-bound nucleus; eukaryotes have one

Answer

Prokaryotic cells (bacteria and archaea) lack a membrane-bound nucleus, while eukaryotic cells (plants, animals, fungi) have a defined nucleus.

Question 5

What is the purpose of the cell cycle checkpoints?

Accepted Answer

To ensure the cell is ready to proceed to the next stage of division

Answer

Cell cycle checkpoints are regulatory mechanisms that verify conditions are favorable before the cell progresses to the next division stage.

BS - Bachelor of Science Practice Test

BS - Bachelor of Science Practice Test

BS Cell Biology and Genetics 3