Honors Biology: Cell Transport

Front

What is endocytosis?

Back

Endocytosis is the process by which cells engulf substances from their external environment, bringing them into the cell. This can include nutrients or other molecules.

Front

What is osmosis?

Back

Osmosis is the movement of water molecules through a selectively permeable membrane from an area of high water concentration to an area of low water concentration.

Front

What is the function of the cell membrane?

Back

The cell membrane controls what substances can enter or leave the cell, helping to maintain homeostasis.

Front

What is exocytosis?

Back

Exocytosis is the process by which cells expel materials, such as waste products or hormones, by packaging them in vesicles that fuse with the cell membrane.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, water moves from inside the cell to the outside solution, causing the cell to shrink.

Front

What is passive transport?

Back

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

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What is diffusion?

Back

Diffusion is the process by which molecules spread from an area of high concentration to an area of low concentration until equilibrium is reached.

Front

What is a selectively permeable membrane?

Back

A selectively permeable membrane allows certain substances to pass through while blocking others, crucial for maintaining cellular homeostasis.

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.

Front

What is the role of vacuoles in cells?

Back

Vacuoles are storage organelles that can hold various substances, including nutrients, waste products, and water, helping to maintain cell turgor.