Unit 3 Review

Front

What is the function of lysosomes in a cell?

Back

Lysosomes contain digestive enzymes that break down worn out parts of the cell.

Front

What is true about respiration in living organisms?

Back

Respiration occurs during both day and night.

Front

How do enzymes speed up chemical reactions?

Back

Enzymes lower the activation energy of the reaction.

Front

What happens to a cell placed in a hypotonic solution?

Back

The cell expands in size and may burst (lyse).

Front

What does it mean that a cell membrane is semi-permeable?

Back

It allows some substances to pass through while blocking others.

Front

Define a hypotonic solution.

Back

A solution with a lower concentration of solutes compared to the inside of the cell.

Front

Define a hypertonic solution.

Back

A solution with a higher concentration of solutes compared to the inside of the cell.

Front

What is the role of ribosomes in a cell?

Back

Ribosomes are responsible for protein synthesis.

Front

What is the primary function of vacuoles in plant cells?

Back

Vacuoles store nutrients, waste products, and help maintain turgor pressure.

Front

What is the significance of the cell membrane's fluid mosaic model?

Back

It describes the cell membrane as a flexible structure with various proteins embedded in it.