Cells & Life

Front

What is a cell membrane?

Back

The cell membrane is a protective barrier that surrounds the cytoplasm of a cell and controls what enters and leaves the cell.

Front

Do all living things maintain a constant temperature?

Back

False. Not all living things maintain a constant temperature; many organisms can adapt to varying environmental temperatures.

Front

What is the primary function of the cell membrane?

Back

The primary function of the cell membrane is to protect the inside of a cell from the environment outside and to regulate the movement of substances in and out of the cell.

Front

What do all cells have in common?

Back

All cells have a cell membrane.

Front

How does the structure of the cell membrane contribute to its function?

Back

The structure of the cell membrane, which includes a lipid bilayer, allows certain substances to pass in and out of the cell while keeping others out.

Front

What is the role of the cytoplasm in a cell?

Back

The cytoplasm is the jelly-like substance within the cell membrane that contains organelles and is the site of many cellular processes.

Front

What are organelles?

Back

Organelles are specialized structures within a cell that perform specific functions, such as energy production, protein synthesis, and waste processing.

Front

What is the function of the nucleus in a cell?

Back

The nucleus is the control center of the cell that contains genetic material (DNA) and regulates cell activities.

Front

What is the difference between plant and animal cells?

Back

Plant cells have a cell wall, chloroplasts for photosynthesis, and larger vacuoles, while animal cells do not have these structures.

Front

What is homeostasis?

Back

Homeostasis is the process by which living organisms maintain a stable internal environment despite changes in external conditions.