Biology PMA 2 Review 2024

Front

What is a gene?

Back

A string of nucleotides that contain the information to make a specific protein.

Front

Which systems are involved in the removal of nitrogen wastes from the body?

Back

Circulatory and Excretory systems.

Front

What is the function of mitochondria in a cell?

Back

They are the powerhouse of the cell, responsible for ATP (energy) production and cellular respiration.

Front

What is the role of the cell membrane?

Back

It encloses the cell and acts as a gatekeeper, allowing some materials to pass through while blocking others.

Front

What happens to crayfish if earthworms are removed from the food chain?

Back

The number of crayfish will decrease.

Front

Define cellular respiration.

Back

The process by which cells convert glucose and oxygen into energy (ATP), carbon dioxide, and water.

Front

What is the primary function of ribosomes?

Back

To synthesize proteins by translating messenger RNA (mRNA).

Front

What is the difference between prokaryotic and eukaryotic cells?

Back

Prokaryotic cells lack a nucleus and membrane-bound organelles, while eukaryotic cells have a nucleus and organelles.

Front

What is homeostasis?

Back

The process by which living organisms maintain a stable internal environment despite external changes.

Front

What is the role of chloroplasts in plant cells?

Back

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