PRACTICE Biology Semester 1 Final 2024

Front

What is homeostasis?

Back

The process by which living organisms regulate their internal environment to maintain stable, constant conditions, such as temperature and pH.

Front

Give an example of homeostasis in the human body.

Back

Red blood cells delivering oxygen to tissues, which helps maintain oxygen levels in the body.

Front

What is a stimulus in biology?

Back

Any change in the environment that can provoke a response from an organism.

Front

What is a response in biology?

Back

The reaction of an organism to a stimulus.

Front

Provide an example of a stimulus and response.

Back

A rat scurries past, and a python strikes at it.

Front

Define a biological community.

Back

All the interacting populations of different species that live in the same geographic location at the same time.

Front

What is the biosphere?

Back

The relatively thin layer of Earth and its atmosphere that supports life.

Front

What is a trophic level?

Back

Each step in a food chain or food web, representing the flow of energy and nutrients.

Front

What is an ecosystem?

Back

A biological community and all the nonliving factors that affect it.

Front

Define a food chain.

Back

A simplified model that shows a single path for energy flow through an ecosystem.