Need Help Please, with missing questions. Really Appreciated. BIOL3402 Genetics

Question

Need Help Please, with missing questions. Really Appreciated.

BIOL3402 Genetics Quiz I Fall 2018 Set A Name: 1. The basic structure of a nuclecotide includes A) amino acids C) lactose and phosphorus mRNA, rRNA, and tRNA 2. What technology can separate DNA molecules according to their size? A) Hyperchromic shift B) Fluorescent in situ hypbridazation ) Western Blotting 3. Meselson and Stahl (1958), using 1SN-labeled E. coli grown in medium containing WN and demonstrated that tive DNA replication is conservative C) DNA replication is dispersed D) The two strands of new DNA molecules after replication are either all new or all old strands. 4. If a bacterial strain has temperature-sensitive mutation DNA ligases, what would be the possible consequence when they stop growth to higher temperature? A) They cannot make new primers B) They cannot elongate new strands C) They cannot displace RNA primers D) They would accumulate Okazaki fragments 5. What is the function of a telomerase? A) To degrade telomere DNA B) To elongate telomere DNA using DNA template C) To elongate telomere DNA using RNA template D) To Unwind nucleosomes 6. Which of the following enzyme is making eukaryotic primers? A) Primase B) DNA pol C) DNA pol D) DNA pol 7. Which of the following steps is NOT needed for general bacterial DNA recombination? A) Endonuclease nicking C) Holliday structure formation B) Branch migration D) Double-strand breaking 8. If the coding region of an mRNA has 900 nucleotides, How many amino acids it should encode? A) 100 C) 900 D) 2700 9. True or false: Some codons may encolde more than one type of amino acids. A) True B) False 10. Genetic codes are degenerate, that means A) Some codons can encode the same amino acids B) Some amino acids can be encoded by the same codon C) What amino acid the codon encodes can be dependent on the species D) Some nucleotide in the coding region will be skipped

Explanation / Answer

4. D

5.C (Telomerase is an RNA-dependent DNA polymerase, meaning an enzyme that can make DNA using RNA as a template)

6.B

7.D

9.True

10.A (The genetic code is degenerate because there are many instances in which different codons specify the same amino acid. A genetic code in which some amino acids may each be encoded by more than one codon)

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