Cell Membrane and Transport Flashcard

Front

What does 'Hydrophobic' mean?

Back

Hydrophobic refers to substances that repel water; they do not mix with or dissolve in water.

Front

What is required for active transport?

Back

Active transport requires energy, typically in the form of ATP, to move materials from low to high concentration against the concentration gradient.

Front

What happens to a cell in a hypotonic solution?

Back

A cell will swell and perhaps burst (lyse) in a hypotonic solution due to the influx of water.

Front

Which components are part of the cell membrane?

Back

The cell membrane is primarily composed of lipids, carbohydrates, and proteins. Nucleic acids are NOT part of the cell membrane.

Front

What is endocytosis?

Back

Endocytosis is a type of cell transport where the cell engulfs material from the outside environment, bringing it into the cell.

Front

What is the function of the cell membrane?

Back

The cell membrane regulates what enters and exits the cell, providing protection and structural support.

Front

Define 'Osmosis'.

Back

Osmosis is the passive transport of water molecules across a semipermeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is passive transport?

Back

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

Front

What are lipids?

Back

Lipids are a group of organic compounds that are insoluble in water, including fats, oils, and phospholipids, which are key components of cell membranes.

Front

What role do proteins play in the cell membrane?

Back

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