Cells & Cell Transport

Front

What is endocytosis?

Back

Endocytosis is the process by which cells engulf substances from their external environment, requiring energy to transport materials into the cell.

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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, moving from an area of high concentration to low concentration.

Front

What is a hypertonic solution?

Back

A hypertonic solution has a higher concentration of solutes compared to the inside of the cell, causing water to move out of the cell and leading to cell shrinkage.

Front

What are prokaryotic cells?

Back

Prokaryotic cells are simple, unicellular organisms that lack membrane-bound organelles and a defined nucleus, such as bacteria.

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What is active transport?

Back

Active transport is the movement of substances against their concentration gradient, requiring energy, often in the form of ATP.

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What is osmosis?

Back

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

Front

What are membrane-bound organelles?

Back

Membrane-bound organelles are specialized structures within a cell, such as the nucleus, mitochondria, and endoplasmic reticulum, that are enclosed by membranes.

Front

What is a 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 and leading to cell swelling.

Front

What is diffusion?

Back

Diffusion is the passive movement of particles from an area of high concentration to an area of low concentration until equilibrium is reached.

Front

What is the role of proteins in facilitated diffusion?

Back

Proteins act as channels or carriers that help specific molecules cross the cell membrane during facilitated diffusion.