BIO FINALLLLLLLL EXAM

BIO FINALLLLLLLL EXAM - NOTE If no answer has been...

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NOTE: If no answer has been indicated in red , the question refers to material not covered this fall 2008. Questions for Test #3 Topics 33. The direction of transfer of genetic information in most living things is: a. protein to DNA to mRNA. b. RNA to DNA to mRNA to protein. c. DNA to tRNA to protein. d. protein to RNA to DNA. e. DNA to mRNA to protein. 34. In RNA, phosphate groups bond to: a. other phosphate groups b. deoxyribose c. amino acids d. ribose e. adenine, uridine, guanine, and cytosine 35. The two features of the Watson-Crick DNA model that explain its ability to function as the molecule of heredity are: a. nucleotide sequence and complementary base pairing. b. sugar-phosphate bonds and hydrogen bonds. c. the presence of AT pairs and GC pairs. d. 5’ and 3’ ends. e. exons and introns. 36. Which of these strands of DNA would hybridize to each other? 1. 5’ ATGGCCTACGTGCAG 3’ 2. 5’ TACCGGATGCACGTC 3’ 3. 5’ CTGCACGTAGGCCAT 3’ 4. 5’ CAGTAT GTTTACGTC 3’ a. 1 & 2 c. 1 & 4 d. 2 & 3 37. In synthesizing DNA on the lagging strand, which is the order of enzyme activities? a. primase, pol I, ligase, pol III b. pol III, primase, pol I, ligase c. ligase, pol I, pol III, primase d. primase, pol III, pol I, ligase e. primase, ligase, pol I, pol III 38. The directions of DNA synthesis of the leading strand, DNA synthesis on the lagging strand, and RNA synthesis are: a. all 3’ to 5’ b. 3’ to 5’, 3’ to 5’, 5’ to 3’ c. all 5’ to 3’ d. 5’ to 3’, 5’ to 3’, 3’ to 5’ e. 5’ to 3’, 3’ to 5’, 5’ to 3’ 39. Which components are needed to translate mRNA in vitro? a. SnRNPs, m7G, rATP b. ribosomes, DNA polymerase I, rNTPs c. tRNAs, amino acids, ribosomes d. RNA polymerase II, transcription factors, rNTPs e. DNA polymerase III, primase, ligase 40. During translation, a(n) _______ bond is made and a(n) ______ bond is broken. a. amino acid tRNA b. peptide amino acyl tRNA c. methionine/AUG amino acid/mRNA d. amino acyl tRNA peptide e. peptide phosphodiester 41. Out of 4 litters from a brown male cat and a brown female cat, there were 14 brown and 6 white kittens. What would you conclude?
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a. One of the parents was homozygous for “white”. b. Both parents were heterozygous for coat color. c. One parent was homozygous for “brown”. d. Brown fur is recessive. e. Many fetuses died during pregnancy. 42. Traits controlled by sex-linked recessive genes are expressed more often in males because: a. males inherit these genes from their fathers b. males are always homozygous for these genes c. all male offspring of a female carrier get the gene d. the male has only one gene for the trait e. males get more doses of the recessive gene than do females 43. Obtaining a phenotypic ratio of 9:3:3:1 for two traits indicates a. the genes for the traits are linked b. the alleles for each trait show incomplete dominance c. frequent cross-overs occurred in meiosis d. sex linkage and dosage effects e. the genes for the two traits are on different chromosomes
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BIO FINALLLLLLLL EXAM - NOTE If no answer has been...

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