The Cell

Front

What is exocytosis?

Back

Exocytosis is a type of cellular transport where substances are expelled from the cell through vesicles that fuse with the cell membrane.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, water moves out of the cell, causing it to shrink.

Front

What is the function of the Golgi bodies?

Back

Golgi bodies package proteins and lipids for delivery to different parts of the cell or for secretion outside the cell.

Front

What is active transport?

Back

Active transport is the movement of substances across a cell membrane against their concentration gradient, requiring energy.

Front

What is the role of the cell membrane?

Back

The cell membrane acts as a 'gatekeeper', separating the cell from its environment and controlling what enters and exits the cell.

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, moving down the concentration gradient.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes compared to the inside of the cell, causing water to enter the cell and potentially make it swell.

Front

What are ribosomes?

Back

Ribosomes are cellular structures that synthesize proteins by translating messenger RNA.

Front

What is the endoplasmic reticulum?

Back

The endoplasmic reticulum is an organelle that helps in the synthesis of proteins and lipids; it comes in two forms: rough (with ribosomes) and smooth (without ribosomes).