GCSE Science

What is the function of mitochondria?

Mitochondria are known as the powerhouse of the cell, where energy production occurs through respiration.

Define photosynthesis.

Photosynthesis is the process by which green plants use sunlight to synthesize foods with the help of chlorophyll.

What are enzymes?

Enzymes are biological catalysts that speed up chemical reactions in living organisms.

Explain the cell membrane's role.

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

What is a species?

A species is a group of living organisms that can interbreed and produce fertile offspring.

What is the function of the nucleus?

The nucleus is the control center of the cell, containing the cell's genetic material (DNA).

Define genetic variation.

Genetic variation refers to the diversity in gene frequencies within a population.

What is osmosis?

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

Name the main stages of the cell cycle.

The main stages of the cell cycle are interphase, mitosis, and cytokinesis.

What is natural selection?

Natural selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring.