NC EOC Review: Homeostasis & Cell Transport

Front

What is homeostasis?

Back

Homeostasis is the process by which living organisms maintain a stable internal environment despite changes in external conditions.

Front

What is active transport?

Back

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

Front

What is passive transport?

Back

Passive transport is the movement of materials across a cell membrane without the use of energy, moving from high to low concentration.

Front

What role does the cell membrane play in homeostasis?

Back

The cell membrane regulates what enters and exits the cell, helping to maintain homeostasis.

Front

Define concentration gradient.

Back

A concentration gradient is the difference in the concentration of a substance across a space.

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from areas of high concentration to areas of low concentration.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane.

Front

What is a contractile vacuole?

Back

A contractile vacuole is an organelle that helps regulate water intake in certain cells, such as paramecium.

Front

What is the difference between high and low concentration?

Back

High concentration means a large number of particles in a given volume, while low concentration means fewer particles in the same volume.

Front

What is the function of ribosomes?

Back

Ribosomes are responsible for protein synthesis in the cell.