Passive transport

Front

What is passive transport?

Back

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

Front

What is the role of mitochondria in a cell?

Back

Mitochondria are the organelles that generate energy for the cell, particularly for active transport processes.

Front

Define diffusion in the context of cellular transport.

Back

Diffusion is the process by which molecules move from an area of high concentration to an area of low concentration.

Front

What does it mean for a cell membrane to be semi-permeable?

Back

A semi-permeable cell membrane allows certain substances to pass through while restricting others, thus controlling the movement of materials in and out of the cell.

Front

In passive transport, substances move ________ the concentration gradient.

Back

WITH

Front

What is osmosis?

Back

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

Front

What are glycoproteins and their function in the cell membrane?

Back

Glycoproteins are proteins with carbohydrate chains attached that play a role in cell recognition and signaling.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses transport proteins to help move substances across the cell membrane.

Front

What is the difference between active transport and passive transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not require energy and moves substances along their concentration gradient.

Front

What is the concentration gradient?

Back

The concentration gradient is the difference in the concentration of a substance between two areas, which drives the movement of molecules.