final exam - BIOL 1020 Principles of Biology FINAL EXAM 1...

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BIOL 1020: Principles of Biology FINAL EXAM 1. Avery et al. used experiment performed by _______ to show that nucleic acid is the genetic material. B. Stahl C. Griffith D. Rosalind 2. Griffith found that the _______ strain of the pneumococcus bacterium was virulent and would cause disease. A. A B. S C. R D. B 3. An organism with the genotype of AaBb (A and B are on different chromosomes) can produce _____different type of gametes? A. 8 B. 4 C. 2 D. 6 4. An organism with a dominant phenotype is crossed with a homozygous recessive organism. None of the numerous offspring are homozygous recessive. The genotype of the dominant parent is: A. AA B. Aa C. aa D. ab 5. People expressing the cystic fibrosis trait are ___________ for the disease gene. A. homozygous dominant B. heterozygous C. homozygous recessive D. X-linked 6. Each is a component of the DNA nucleotide except a: A. Nitrogen base B. Pentose sugar C. Phosphate group D. Fatty acid 7. The two strands of the DNA double helix are: A. parallel B. antiparallel C. polypeptides D. semiconservative 8. DNA replication is best described as being: A. dispersive B. conservative C. nonconservative D. semiconservative 9. RNA polymerase recognizes a(n) _______ sequence of the gene. A. origin B. promoter C. repressor D. operator 10. An unaffected couple (neither father nor mother have the disease) has two hemophilic sons and two normal daughters. This is because A. mother is a carrier and has X h X H genotype B. hemophilia is an autosomal recessive C. hemophilia is a sex influenced trait D. father is a carrier and has X H X h genotype 11. New aminoacyl-tRNAs (tRNA with attached amino acid) bind to mRNA at the _______ site of the ribosome. A. A B. B C. T D. P E. Z 12. The first amino acid in any protein is coded for by which codon? A. UGA which codes for leucine. B. UAA which codes for glycine. C. AUG which codes for N-formyl (methionine). D. UUA which is a stop codon E. Varies from protein to protein so it cannot be determined.
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13. Pieces of mRNA that are transcribed from the DNA, but are NOT found in the mature mRNA molecule once it reaches the cytoplasm, are called: A. exons B. introns C. codons D. anti-codons 14. Okazaki fragments are: A. pieces of chromosomes created by topoisomerases B. made from 3' to 5' so that they can be joined together at the replication fork. C. made on the lagging strand from 5' to 3'. D. ligated together by DNA helicases. 15. DNA is always synthesized _____________ on both the leading and lagging strands? A. from 3'--->5' B. from 5'--->3' C. toward the Okazaki fragments D. in both directions 16. Which of the following is a correct base pair? A. C-T B. A-G C. A-T D. A-C 17. Working with mutations in mould, Beadle & Tatum demonstrated relationship between one gene and one __________. A. lipid
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final exam - BIOL 1020 Principles of Biology FINAL EXAM 1...

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