Biology Midterm Review

Front

What is osmosis?

Back

Osmosis is the movement of water across a selectively permeable membrane.

Front

What makes an atom neutral?

Back

An atom is neutral because the number of protons is equal to the number of electrons.

Front

What type of environment is ideal for animal cells?

Back

Isotonic environment is ideal for animal cells.

Front

What does metabolism refer to in the body?

Back

Metabolism refers to the release or use of chemical energy in the body.

Front

If a DNA molecule contains 28% adenine, what percentage of thymine will it contain?

Back

28% thymine.

Front

What are the three types of subatomic particles in an atom?

Back

Protons, neutrons, and electrons.

Front

What is the function of the cell membrane?

Back

The cell membrane regulates what enters and exits the cell.

Front

What is the role of enzymes in biological reactions?

Back

Enzymes act as catalysts to speed up chemical reactions in the body.

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 convert sunlight into chemical energy.