Cellular Transport

Front

What is cellular transport?

Back

The process by which substances move across cell membranes to enter or exit the cell.

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy and moves substances down their concentration gradient, while active transport requires energy to move substances against their concentration gradient.

Front

Define hydrophobic. What does it mean in the context of cellular membranes?

Back

Hydrophobic refers to the property of a substance that repels water. In cellular membranes, hydrophobic regions help to form a barrier that separates the inside of the cell from the external environment.

Front

What is a transport protein?

Back

A transport protein is a protein that helps move substances across a cell membrane, often facilitating the transport of molecules that cannot pass freely through the lipid bilayer.

Front

What is osmosis?

Back

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

Front

What happens to a cell in a hypotonic solution?

Back

In a hypotonic solution, water enters the cell, causing it to swell and potentially burst due to the higher concentration of solute inside the cell.

Front

What is a solute?

Back

A solute is a substance that is dissolved in a solvent, forming a solution. Examples include salts, sugars, and gases.

Front

What does 'high concentration area' mean?

Back

It refers to a region where particles are tightly packed together, indicating a greater number of solute particles in that area compared to others.

Front

What is the role of glucose in cellular transport?

Back

Glucose is a vital energy source for cells and requires transport proteins to enter the cell, as it cannot freely diffuse through the lipid bilayer.

Front

What is the difference between unicellular and multicellular organisms?

Back

Unicellular organisms consist of a single cell, while multicellular organisms are made up of multiple cells that work together.