Living Environment Regents DRILL 2

Front

What is the main function of the cell membrane?

Back

The cell membrane controls the movement of substances in and out of the cell, maintaining homeostasis.

Front

Define selectively permeable in the context of cell membranes.

Back

Selectively permeable means that the cell membrane allows certain substances to enter or exit the cell while blocking others.

Front

What structures do amebas use to meet their energy needs?

Back

Amebas rely on the cell membrane and mitochondria to meet their energy needs.

Front

What is the role of mitochondria in a cell?

Back

Mitochondria are known as the powerhouse of the cell, as they generate ATP through cellular respiration.

Front

What is the function of chloroplasts in plant cells?

Back

Chloroplasts are responsible for photosynthesis, converting light energy into chemical energy.

Front

Explain the term 'heterotrophic organism'.

Back

A heterotrophic organism cannot produce its own food and must consume other organisms for energy.

Front

What is the significance of ribosomes in a cell?

Back

Ribosomes are the sites of protein synthesis, where amino acids are assembled into proteins.

Front

Describe the process of diffusion.

Back

Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane.

Front

What is the difference between active and passive transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not.