Biology I Final

Front

What happens to cells when a person drinks salty water?

Back

The cells shrink due to osmosis, as water moves out of the cells to balance the salt concentration.

Front

What is osmosis?

Back

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

Front

What was the outcome of Griffith's bacterial transformation experiments?

Back

Harmless bacteria changed into harmful bacteria.

Front

What is the result of the transcription of the DNA sequence ATT AGG?

Back

The RNA sequence produced is UAA UCC.

Front

What are the four types of carbon-based molecules in organisms?

Back

Nucleic acids, proteins, lipids, and carbohydrates.

Front

Define diffusion in the context of cellular processes.

Back

Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What role do enzymes play in biological reactions?

Back

Enzymes act as catalysts to speed up chemical reactions without being consumed in the process.

Front

Explain the structure and function of the cell membrane.

Back

The cell membrane is a phospholipid bilayer that regulates what enters and exits the cell, providing protection and support.

Front

What is the significance of the double helix structure of DNA?

Back

The double helix structure allows for the storage of genetic information and the replication of DNA during cell division.

Front

What are the main functions of proteins in living organisms?

Back

Proteins serve as enzymes, structural components, transport molecules, and play roles in immune response.