environmental (5.14-5.17)

What is photosynthesis?

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

Explain the significance of the cell membrane.

The cell membrane is crucial for protecting the cell, controlling the movement of substances in and out of the cell, and facilitating communication between cells.

What are the main components of the atmosphere?

The main components of the atmosphere are nitrogen (78%), oxygen (21%), argon (0.93%), carbon dioxide (0.04%), and other gases.

What is the function of ribosomes?

Ribosomes are responsible for protein synthesis in cells by translating messenger RNA into polypeptide chains.

Define biodiversity.

Biodiversity refers to the variety of life in the world or in a particular habitat or ecosystem.

What is an ecosystem?

An ecosystem is a community of living organisms and their physical environment interacting as a system.

What is the primary function of enzymes?

Enzymes act as catalysts to speed up chemical reactions in biological processes.

What role do mitochondria play in a cell?

Mitochondria are known as the powerhouses of the cell, converting energy from food into adenosine triphosphate (ATP) during respiration.

Describe the process of osmosis.

Osmosis is the movement of water molecules from an area of lower solute concentration to an area of higher solute concentration through a semi-permeable membrane.

What is the purpose of DNA replication?

DNA replication is the process by which a cell makes an identical copy of its DNA before cell division.