Unit 4 Review

Front

What is the role of genes in determining traits in organisms?

Back

Genes code for specific proteins that determine the traits expressed in an organism.

Front

Why is genetic variation important for a species' adaptation?

Back

The species lacks genetic variation needed for adaptation.

Front

What is the primary function of ribosomes in a cell?

Back

Protein synthesis.

Front

What organelle is referred to as the 'powerhouse of the cell'?

Back

Mitochondria.

Front

How do adaptations contribute to a species' survival?

Back

The species develops adaptations that help it find food, avoid predators, or survive in changing environments.

Front

What is a gene?

Back

A segment of DNA that contains the instructions for building proteins.

Front

What is the process of natural selection?

Back

The process by which organisms better adapted to their environment tend to survive and produce more offspring.

Front

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

Back

A dominant trait is expressed when at least one dominant allele is present, while a recessive trait is only expressed when two recessive alleles are present.

Front

What is the function of mitochondria in cells?

Back

Mitochondria produce energy in the form of ATP through cellular respiration.

Front

What is the significance of genetic variation in a population?

Back

Genetic variation increases a population's ability to adapt to changing environments.