Biology Keystone Exam Review

Front

What is incomplete dominance?

Back

A type of inheritance where the phenotype of a heterozygote is an intermediate of the phenotypes of the homozygotes.

Front

What is a testable hypothesis?

Back

A statement that can be tested through experimentation or observation, predicting an outcome based on a specific condition.

Front

What happens to enzymes when they are heated to a high temperature?

Back

They denature, meaning they lose their functional shape and can no longer catalyze reactions.

Front

What is the main difference between mitosis and meiosis?

Back

Mitosis produces genetically identical daughter cells, while meiosis produces genetically diverse gametes.

Front

During which phase of the meiotic cell cycle does DNA replication occur?

Back

Interphase.

Front

What is co-dominance?

Back

A type of inheritance where both alleles in a heterozygote are fully expressed, resulting in a phenotype that shows both traits.

Front

What is complete dominance?

Back

A type of inheritance where the dominant allele completely masks the effect of the recessive allele in a heterozygote.

Front

What is the role of enzymes in biological reactions?

Back

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

Front

What are abiotic components of an ecosystem?

Back

Non-living chemical and physical parts of the environment that affect living organisms, such as water, sunlight, and minerals.

Front

What is the significance of the interphase in the cell cycle?

Back

Interphase is the phase where the cell grows, duplicates its DNA, and prepares for division.