Biology Final Review

What is the structure of a DNA molecule?

• A single strand

• A double helix

• A triple helix

• A circular structure

What is the significance of DNA in living organisms?

• DNA is responsible for energy production in cells.

• DNA serves as the blueprint for traits of all living things.

• DNA is involved in the digestion of food.

• DNA helps in the absorption of nutrients.

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

What is the significance of biodiversity?

• Biodiversity is essential for maintaining ecosystem stability and resilience.

• Biodiversity has no significant impact on ecosystems.

• Biodiversity only benefits certain species and not the ecosystem as a whole.

• Biodiversity is primarily important for aesthetic purposes.

Tags

NGSS.HS-LS2-2

NGSS.HS-LS2-6

NGSS.HS-LS2-7

NGSS.HS-LS4-5

What is a mutation?

• A change in the DNA sequence that can lead to changes in traits.

• A process of cell division that produces identical cells.

• A type of genetic engineering used to enhance traits.

• A method of DNA replication that ensures accuracy.

Tags

NGSS.HS-LS3-2

What is the difference between prokaryotic and eukaryotic cells?

• Prokaryotic cells have a nucleus and membrane-bound organelles, while eukaryotic cells lack both.

• Prokaryotic cells are larger than eukaryotic cells.

• Prokaryotic cells lack a nucleus and membrane-bound organelles, while eukaryotic cells have both.

• Prokaryotic cells reproduce sexually, while eukaryotic cells reproduce asexually.

What is the role of enzymes in biological reactions?

• Enzymes act as catalysts to speed up chemical reactions in the body.

• Enzymes are used to break down food into smaller molecules.

• Enzymes are hormones that regulate metabolic processes.

• Enzymes provide energy for chemical reactions.

What is the function of ribosomes in a cell?

• Ribosomes are responsible for energy production.

• Ribosomes are responsible for protein synthesis.

• Ribosomes are responsible for DNA replication.

• Ribosomes are responsible for cell division.

What is the role of mitochondria in cells?

• Mitochondria are responsible for protein synthesis in cells.

• Mitochondria are known as the powerhouse of the cell, generating ATP through cellular respiration.

• Mitochondria help in the detoxification of harmful substances.

• Mitochondria are involved in the storage of genetic information.

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-5

How many chromosomes do human cells have?

• 44 chromosomes

• 46 chromosomes

• 48 chromosomes

• 42 chromosomes

Tags

NGSS.HS-LS3-1

What does the term 'dominant' refer to in genetics?

• A trait that is always expressed in the phenotype.

• A trait that covers over, or masks another form of that trait.

• A trait that is only expressed in the presence of two copies.

• A trait that is inherited independently of other traits.