2023 STAAR BIOLOGY

Front

What is the basic unit of life?

Back

The cell is the basic unit of life.

Front

What is photosynthesis?

Back

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

Front

Define ecosystem.

Back

An ecosystem is a community of living organisms interacting with their physical environment.

Front

What is the role of DNA in living organisms?

Back

DNA contains the genetic instructions for the development, functioning, growth, and reproduction of all known living organisms.

Front

What is natural selection?

Back

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

Front

What are the main components of a food chain?

Back

The main components of a food chain are producers, consumers, and decomposers.

Front

Define biodiversity.

Back

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

Front

What is the function of the mitochondria?

Back

Mitochondria are known as the powerhouse of the cell, as they produce energy in the form of ATP.

Front

What is a hypothesis?

Back

A hypothesis is a proposed explanation for a phenomenon, which can be tested through experimentation.

Front

What is the difference between a prokaryotic and eukaryotic cell?

Back

Prokaryotic cells do not have a nucleus or other membrane-bound organelles, while eukaryotic cells do.