Hourly.B1.AnswerKey

Hourly.B1.AnswerKey - VERSION B1 ANSWER KEY NAME:_ ID#:_...

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VERSION B1 ANSWER KEY Hourly Fall 2006 NAME:__________________________ BIO SCI 97 SECTION B MWF 4 – 4:50p ID#:__________________________ 24 multiple choice questions. Each question is worth 1 point. Mark down one answer per question . No points are deducted for a wrong answer. A table with the standard genetic code is at the end of the exam. 1. Which of the following is NOT true: The phenotype of an organism A) is determined by the genomic DNA sequence B) includes traits inherited from the parents C) can be different for identical twins D) depends on the alleles for each gene E) depends on the environment 2. Which of the following is an important source of genetic variation? A) Alternative splicing B) Proofreading C) Wobble base pairing D) Tissue-specific gene regulation E) Crossing over 3. On Mars, the living organisms synthesize their DNA in the 3’ to 5’ direction . In all other respects, DNA replication is the same as that on Earth. What would the replication bubble of the Martian DNA look like? The original parental DNA strands are drawn with thick lines and the newly synthesized DNA strands are drawn with thin lines. ANS: A) 5’ 5’ 3’ 3’ 5’ 5’ 3’ 3’ 5’ 5’ 3’ 3’ 5’ 5’ 3’ 3’ 5’ 5’ 3’ 3’ A) B) C) D) E) 1
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4. In a liver tumor patient, all of the liver tumor cells contain a mutation in one of the two homologous copies of the Tumor Necrosis Factor (TNF) gene. Some of the liver tumor cells metastasize (migrate) to the testes (where the sperm gametes are made). The patient manages to have many children after this metastasis. How many of these children will inherit the mutated Tumor Necrosis Factor gene? A) None B) A few C) Approximately 50% D) Most E) All 5. In a deoxyribose nucleotide, the base is attached to which carbon of the deoxyribose ring? A) 1 B) 2 C) 3 D) 4 E) 5 6. Trying to finish his experiment before lecture, Lamar forgets to add one of his two primers to his PCR reaction. Compared to a normal PCR reaction in which both primers are added, Lamar’s PCR reaction after 30 cycles will contain how much newly synthesized product? A) No new product at all B) Small amounts of one strand of the starting DNA template C) Normal amounts of one strand of the starting DNA template D) Small amounts of both strands of the starting DNA template E) Normal amounts of both stands of the starting DNA template 7. On Jupiter, the genetic material of living organisms is composed of protein . The Jupiter version of the Avery experiment is performed in which S cell extract is treated separately with
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This test prep was uploaded on 04/22/2008 for the course BIO SCI 97 taught by Professor Yu during the Fall '06 term at UC Irvine.

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Hourly.B1.AnswerKey - VERSION B1 ANSWER KEY NAME:_ ID#:_...

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