Biology Midterm Review

Front

What is diffusion?

Back

Diffusion is the movement of molecules from an area of high concentration to an area of low concentration.

Front

What is the independent variable in the question: Does being tardy impact test scores?

Back

The independent variable is the time a student arrives to class.

Front

What does a cell membrane do?

Back

A cell membrane controls the movement of substances in and out of the cell.

Front

What molecule helps plants absorb light energy?

Back

Pigments help plants absorb light energy.

Front

Why does water have a high heat capacity?

Back

The hydrogen bonds between water molecules take a great deal of energy to break.

Front

What is osmosis?

Back

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

Front

What is the function of chloroplasts?

Back

Chloroplasts are the organelles in plant cells where photosynthesis occurs.

Front

Define homeostasis.

Back

Homeostasis is the process by which living organisms maintain a stable internal environment.

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 difference between prokaryotic and eukaryotic cells?

Back

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