AFCT General Science: Life and Biological 3

Question 1

What is the difference between mitosis and meiosis?

Accepted Answer

Mitosis produces two identical cells; meiosis produces four genetically unique cells with half the chromosomes

Answer

Mitosis produces four cells; meiosis produces two cells

Answer

There is no significant difference

Answer

Mitosis occurs only in plants; meiosis occurs only in animals

Question 2

What is the function of the kidneys in the human body?

Accepted Answer

To filter blood, remove waste products, and regulate fluid and electrolyte balance

Answer

To produce hormones for growth

Answer

To digest proteins and fats

Answer

To produce red blood cells

Question 3

What is an ecosystem?

Accepted Answer

A community of living organisms interacting with their non-living environment

Answer

A group of organisms of the same species living together

Answer

The physical location where an organism lives

Answer

A group of similar biomes across the planet

Question 4

What is the function of hemoglobin in red blood cells?

Accepted Answer

To bind and transport oxygen from the lungs to tissues throughout the body

Answer

To fight infections

Answer

To help blood clot at wound sites

Answer

To regulate body temperature

Question 5

What is the difference between a dominant and a recessive gene?

Accepted Answer

A dominant allele is expressed when one copy is present; a recessive allele requires two copies to be expressed

Answer

Dominant genes are always beneficial; recessive genes are always harmful

Answer

Dominant genes come from the father; recessive genes come from the mother

Answer

There is no real difference; all genes are expressed equally

Question 6

What is the function of enzymes in biological systems?

Accepted Answer

To act as biological catalysts that speed up chemical reactions

Answer

To provide structural support to cells

Answer

To store energy for later use

Answer

To transport oxygen in the blood