Cellular Transport

Front

What is osmosis?

Back

Osmosis is the movement of water from an area of high water concentration to an area of low water concentration across a semi-permeable membrane.

Front

What is diffusion?

Back

Diffusion is the movement of particles from an area of high concentration to an area of low concentration.

Front

What is active transport?

Back

Active transport is the movement of particles against the concentration gradient, from low to high concentration, which requires energy (ATP).

Front

What is homeostasis?

Back

Homeostasis is the state of biological balance in which an organism maintains stable internal conditions despite external changes.

Front

What is a concentration gradient?

Back

A concentration gradient is the difference in concentration of a substance across a space, which drives the movement of particles.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process of passive transport of molecules across a cell membrane via specific transmembrane integral proteins.

Front

What is a semi-permeable membrane?

Back

A semi-permeable membrane is a barrier that allows certain substances to pass through while blocking others.

Front

What is the difference between hypotonic and hypertonic solutions?

Back

A hypotonic solution has a lower concentration of solutes compared to another solution, causing cells to swell. A hypertonic solution has a higher concentration of solutes, causing cells to shrink.

Front

What role do transport proteins play in cellular transport?

Back

Transport proteins assist in the movement of substances across the cell membrane, either passively or actively.

Front

What is the significance of ATP in active transport?

Back

ATP provides the energy required for active transport to move substances against their concentration gradient.