Cells

Front

What is diffusion?

Back

Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration until equilibrium is reached.

Front

What is osmosis?

Back

Osmosis is the diffusion of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is homeostasis?

Back

Homeostasis is the ability of a cell or organism to maintain a stable internal environment despite changes in external conditions.

Front

What are malignant tumors?

Back

Malignant tumors are cancerous growths that can invade nearby tissues and spread to other parts of the body.

Front

What are benign tumors?

Back

Benign tumors are non-cancerous growths that do not spread to other parts of the body and are usually not life-threatening.

Front

What are nucleic acids?

Back

Nucleic acids are biomolecules, such as DNA and RNA, that carry genetic information and are essential for the storage and transmission of genetic material.

Front

What is passive transport?

Back

Passive transport is the movement of molecules across a cell membrane without the use of energy, relying on concentration gradients.

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane against their concentration gradient, requiring energy (usually in the form of ATP).

Front

What is the role of the cell membrane?

Back

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

Front

What is the difference between diffusion and osmosis?

Back

Diffusion refers to the movement of any molecules, while osmosis specifically refers to the movement of water molecules.