Cell Transport Review Flashcardziz

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that allows substances to cross membranes with the assistance of special proteins.

Front

What type of transport is exocytosis?

Back

Exocytosis is a form of active transport that involves the expulsion of materials from a cell.

Front

What does it mean if a solution is hypertonic?

Back

A hypertonic solution has a higher concentration of solutes compared to the inside of the cell, leading to water moving out of the cell.

Front

What is passive transport?

Back

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

Front

What is hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes compared to the inside of the cell, causing water to move into the cell.

Front

What is the difference between active 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 gradient.

Front

What role do transport proteins play in facilitated diffusion?

Back

Transport proteins help specific molecules cross the cell membrane by providing a passageway.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, the cell loses water and may shrink due to the higher concentration of solutes outside.

Front

What is osmosis?

Back

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

Front

What is the significance of isotonic solutions for cells?

Back

Isotonic solutions have equal concentrations of solutes inside and outside the cell, resulting in no net movement of water and maintaining cell shape.