Unit 2 Exam Review Biology

What are some examples of phenotypes? Select all that apply.

• Eye color and height

• DNA sequence

• Blood type

• Genetic code

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If pharmaceutical researchers want to learn how to keep cancer cells from dividing uncontrollably, which approach are they most likely to try?

• Inhibiting cell division

• Increasing cell metabolism

• Enhancing cell communication

• Stimulating cell growth

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Which process is like mitosis but occurs in simpler cells?

• Binary fission

• Meiosis

• Budding

• Conjugation

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What is the name of the process that completes the cell cycle by dividing a cell into two daughter cells?

• Cytokinesis

• Replication

• Transcription

• Translation

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Male and female whales practice mating behaviors to form offspring. Male and female whales cooperate with each other to fertilize egg cells. What form of reproduction is occurring?

• Sexual reproduction

• Asexual reproduction

• Binary fission

• Budding

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What pattern of inheritance occurs when a trait is controlled by multiple different alleles?

• Multiple allelism

• Codominance

• Incomplete dominance

• Polygenic inheritance

Which genetic mutations cause damage to an individual organism?

• Harmful mutations

• Silent mutations

• Neutral mutations

• Beneficial mutations

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Which of the following traits is totally determined by genes?

• Blood type

• Height

• Weight

• Language spoken

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Why are enzymes needed in the process of DNA replication?

• They speed up the chemical reactions required for replication.

• They provide energy for the cell.

• They store genetic information.

• They transport DNA out of the nucleus.

What keeps the two DNA strands separate during replication?

• Single-strand binding proteins

• DNA ligase

• RNA polymerase

• Topoisomerase