ninth grade biology midterm study guide

Front

Science

Back

The process of understanding the world through observation and experiment.

Front

Heat of vaporization

Back

The amount of energy needed to change one gram of a liquid substance to a gas at a constant temperature.

Front

Thylakoid

Back

Membrane-bound structure within chloroplasts; stacked together called granum.

Front

Cell

Back

The basic unit of life, enclosed by a membrane and containing genetic material.

Front

Polar molecule

Back

A neutral, or uncharged molecule that has an asymmetric internal distribution of charge, leading to partially positive and partially negative regions.

Front

Chloroplast

Back

An organelle in plant cells that conducts photosynthesis.

Front

Photosynthesis

Back

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

Front

Ecosystem

Back

A biological community of interacting organisms and their physical environment.

Front

Cell membrane

Back

A biological membrane that separates and protects the interior of all cells from the outside environment.

Front

Mitochondria

Back

Organelles known as the powerhouse of the cell, where energy production occurs.