S1 Final - Biology

Front

What is diffusion?

Back

Diffusion is the movement of molecules from an area of high concentration to an area of low concentration.

Front

What type of transport requires energy input from the cell?

Back

Active transport requires energy input from the cell.

Front

What is a qualitative observation?

Back

A qualitative observation is a description that does not involve numbers, such as 'He wore red shoes.'

Front

What are the main functions of lipids in living organisms?

Back

Lipids function mainly as sources of stored energy and components of cellular membranes.

Front

What elements make up proteins?

Back

Proteins are made up of carbon, hydrogen, oxygen, and nitrogen (CHON).

Front

What is osmosis?

Back

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

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process of passive transport of molecules across a biological membrane via specific transmembrane integral proteins.

Front

What is the role of enzymes in biological reactions?

Back

Enzymes act as catalysts to speed up chemical reactions in the body without being consumed in the process.

Front

What is the structure of a cell membrane?

Back

The cell membrane is primarily composed of a phospholipid bilayer with embedded proteins, cholesterol, and carbohydrates.

Front

What is the function of carbohydrates in living organisms?

Back

Carbohydrates serve as a primary energy source and are involved in cell structure and signaling.