Unit 1 Test Review

Front

What are the reasons that viruses are considered to be nonliving?

Back

1. They are not made up of cells. 2. They cannot reproduce on their own without a host cell. 3. They do not have membrane-bound organelles to perform metabolic processes.

Front

Which biomolecule stores long-term energy, insulates us, and makes up the cell membrane?

Back

Lipid.

Front

What does a plant cell have that an animal cell does not?

Back

Chloroplast.

Front

What is an example of homeostasis?

Back

Maintaining an appropriate respiration (breathe) rate.

Front

What is found inside a prokaryote?

Back

Cytoplasm, Circular DNA (nucleoid), Ribosomes.

Front

Define a virus.

Back

A virus is a microscopic infectious agent that can only replicate inside the living cells of an organism.

Front

What is the function of lipids in biological systems?

Back

Lipids store long-term energy, provide insulation, and make up cell membranes.

Front

What is the role of chloroplasts in plant cells?

Back

Chloroplasts are responsible for photosynthesis, converting sunlight into energy.

Front

What is homeostasis?

Back

Homeostasis is the process by which living organisms maintain a stable internal environment despite changes in external conditions.

Front

What are the main components of a prokaryotic cell?

Back

Prokaryotic cells typically contain cytoplasm, ribosomes, and circular DNA (nucleoid).