• 1. Where is the DNA located?
• Your Colleagues Responded
• A. Cell nucleus

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• B. Mitochondria

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• C. Ribosome

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• D. Mostly in the cell’s nucleus, but some is found in the mitochondria

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• 2. How many chromosomes does a human being have?
• Your Colleagues Responded
• A. 22 pairs (autosomes) and 2 sex chromosomes (46 total)

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• B. 25 pairs (50 total)

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• C. 23 pairs and 2 sex chromosomes (48)

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• 3. A nucleotide consists of:
• Your Colleagues Responded
• A. One base (ATCG), plus a “deoxy-ribose” sugar molecule

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• B. One base (ATCG), plus a phosphate group

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• C. One base (ATCG), a “deoxy-ribose” sugar molecule, a hydrogen molecule, and a phosphate group

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• D. One base (ATCG), plus a “deoxy-ribose” sugar molecule and a phosphate group

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• 4. Gene expression is comprised of two steps: _____ and _____.
• Your Colleagues Responded
• A. Translation and transaction

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• B. Transcription and translation

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• C. Transcription and transaction

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• 5. A gene mutation is a permanent change in the DNA sequence of a gene.
• Your Colleagues Responded
• A. True

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• B. False

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• 6. Somatic gene mutations can happen at any time in a person’s life.
• Your Colleagues Responded
• A. True

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• B. False

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• 7. Single nucleotide polymorphisms:
• Your Colleagues Responded
• A. Consist of a difference in one base pair of the nucleotide

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• B. Consist of differences in two base pairs of the nucleotide

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• C. Lack a deoxy-ribose sugar molecule

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• D. Lack a phosphate group

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• 8. Disease-causing mutations are rare and occur in less than _____% of the population.
• Your Colleagues Responded
• A. 1

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• B. 2

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• C. 5

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• D. 10

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