UMUC BIOL350 final exam 2015 latest december

Jul 3rd, 2016
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1. The monomer unit of DNA is: a. an amino acid b. a nucleotide c. a fatty acid d. glucose 2. Disulfide bridges are a type of covalent bond critical to maintaining the 3dimensional shape of proteins. The amino acid involved in disulfide bridge formation is: a. tyrosine b. arginine c. cysteine d. glutamic acid 3. Sister chromatids form: a. during G1 b. during G2 c. during S phase d. during M phase 4. In a cell containing 10 chromosomes, mitosis results in the formation of daughter cells containing __________ chromosomes. a. 5 b. 10 c. 20 d. 40 5. Mutant Ras proteins, which are found in many cancer cells, cannot hydrolyze their bound GTP to GDP, and therefore, a. cannot turn themselves on b. cannot turn themselves off c. cannot be degraded 6. Checkpoints during the cell cycle process allow cells to: a. detect DNA damage b. detect improper spindle formation during mitosis c. check for unreplicated DNA following DNA synthesis (S phase) d. all of the above 7. Wh

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UMUC BIOL350 final exam 2015 latest december1. The monomer unit of DNA is:a. an amino acidb. a nucleotidec. a fatty acidd. glucose2. Disulfide bridges are a type of covalent bond critical to maintaining the 3dimensional shape ofproteins. The amino acid involved in disulfide bridge formation is:a. tyrosineb. argininec. cysteined. glutamic acid3. Sister chromatids form:a. during G1b. during G2c. during S phased. during M phase4. In a cell containing 10 chromosomes, mitosis results in the formation of daughter cellscontaining __________ chromosomes.a. 5b. 10c. 20d. 405. Mutant Ras proteins, which are found in many cancer cells, cannot hydrolyze their bound GTPto GDP, and therefore, a. cannot turn themselves onb. cannot turn themselves offc. cannot be degraded6. Checkpoints during the cell cycle process allow cells to:a. detect DNA damageb. detect improper spindle formation during mitosisc. check for unreplicated DNA following DNA synthesis (S phase)d. all of the above7. When DNAs from two different organisms are incubated together, some duplexes are formedby DNA strands from the two species. What indicates that such duplexes are less stable thanthos

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