Semester 1 Review

Front

What is osmosis?

Back

Osmosis is the movement of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, water moves out of the cell, causing the cell to shrink.

Front

What is the role of helicase in DNA replication?

Back

Helicase is the enzyme that unwinds and separates the two strands of DNA during replication.

Front

What are the four main types of macromolecules?

Back

The four main types of macromolecules are nucleic acids, proteins, carbohydrates, and lipids.

Front

What is cytoplasm?

Back

Cytoplasm is the gel-like fluid inside a cell that holds organelles and is the site of many cellular processes.

Front

What distinguishes eukaryotic cells from prokaryotic cells?

Back

Eukaryotic cells have a nucleus, while prokaryotic cells do not.

Front

What is the function of ribosomes?

Back

Ribosomes are responsible for protein synthesis in the cell.

Front

Define a selectively permeable membrane.

Back

A selectively permeable membrane allows certain molecules to pass through while blocking others.

Front

What is the function of the cell membrane?

Back

The cell membrane protects the cell and regulates what enters and exits the cell.

Front

What are enzymes?

Back

Enzymes are biological catalysts that speed up chemical reactions in the body.