DIA2 2024

Front

What is passive transport?

Back

Passive transport is the movement of molecules from an area of high concentration to an area of low concentration without the use of energy, following the concentration gradient.

Front

What happens to a cell in a hypotonic solution?

Back

In a hypotonic solution, such as distilled water, a cell will swell as water enters the cell due to osmosis.

Front

What is the function of the cell membrane?

Back

The cell membrane controls what enters and exits the cell, providing selective permeability.

Front

What is a phospholipid bilayer?

Back

A phospholipid bilayer is a double layer of phospholipids that makes up the cell membrane, with hydrophilic heads facing outward and hydrophobic tails facing inward.

Front

What is the purpose of flagella?

Back

Flagella are tail-like structures that help in the movement of cells.

Front

Define active transport.

Back

Active transport is the movement of molecules against their concentration gradient, from low to high concentration, requiring energy.

Front

What is osmosis?

Back

Osmosis is the diffusion of water molecules across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is the role of proteins in the cell membrane?

Back

Proteins in the cell membrane assist in transport, act as receptors, and provide structural support.

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes compared to the inside of the cell, leading to water entering the cell.

Front

What is a hypertonic solution?

Back

A hypertonic solution has a higher concentration of solutes compared to the inside of the cell, causing water to leave the cell.