7th Grade Science Benchmark Review

Front

What are the three states of matter?

Back

Solid, Liquid, Gas.

Front

What happens to gas molecules in a closed container?

Back

Gas molecules move freely and spread out to fill the container.

Front

What is a unicellular organism?

Back

An organism made up of a single cell that performs all life functions.

Front

What is a mixture?

Back

A combination of two or more substances that can be separated by physical means.

Front

What is the function of mitochondria in a cell?

Back

Mitochondria produce energy for the cell, often referred to as the 'powerhouse of the cell'.

Front

What is photosynthesis?

Back

The process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen.

Front

What is the role of chloroplasts in plant cells?

Back

Chloroplasts are organelles that conduct photosynthesis, converting light energy into chemical energy.

Front

What is the difference between unicellular and multicellular organisms?

Back

Unicellular organisms consist of one cell, while multicellular organisms are made up of multiple cells.

Front

What is filtration?

Back

A process used to separate solids from liquids or gases using a filter.

Front

What is the significance of the cell membrane?

Back

The cell membrane controls what enters and exits the cell, maintaining homeostasis.