Question

base pairing Done stand is positively charged and th one strand contains only purind e DNA elych o ly me h 40) En me that wind the DNA strands during replication A. helicase B. mucienne E primase D. DNA polymerase 41) The leading and the lasing and differ in that A) the leading strand is synthesized in the same direction is the movement of the replication fork, and the lagring strand is synthesized in the opposite direction B) the leading strand is synthesized by adding nucleotides to the end of the growing into and the lagring strand is synthesized by adding nucleotides to the end C) the leading strand is synthesized continuously, whereas the lasing strand is synthesized in short fragments that are ultimately stitched together D) both A and B E) both and C 42. Using the above table, what series of amino acids are coded for this mRNA sequence: CUC-AAG-UGC-UUC A) Ser - Tyr - Arg - Gly B) Val - Asp - Pro - His C) Leu - Lys - Cys-Phe D) Pro-Glu - Leu - Val 43 For the same mRNA sequence as in question above, the anticodons for the codons in the mRNA are: A) GAG-UUC - ACG - AAG B) GAG - TTC - ACG - AAG C) CUC GAN - CGU – CUU D] CU - CGU - GNA-CUC 44) The codons UAA, UAG, and UGA all code for A) arginine B) threonine C) phenylalanine 6) stop codons A) rRNA 45) Anticodons are found on B) mRNA C) DNA D) ERNA 46) What amino acid sequence will be generated based on the following mRNA codon sequence? 5'-AUG-UCU-UCG-UUA-UCC-UUG-3 c. met-ser-leu-ser-leu-ser a. met-arg-glu-arg-glu-agr b. met-glu-arg-arg-gin-leu d. met-ser-ser-leu-ser-leu e. met-leu-phe-arg-glu-glu 47-52. FOR AECH OF THE FOLLOWING, MATCH THE CORRECT TERM WITH ITS DEFINATION OR EXAMPLE. MORE THAN ONE ANSWER MAY BE APPROPRIATE. TERMS b. lethal gene a dominant d. genotype c. codoninant

Answer 1

Answer

40) A) helicase

Explanation : helicase breaks the hydrogen bond present between the two strands of the DNA during replication and thus helps in unwinding of the DNA

41) C)

Explanation : synthesis of leading strand is continuous whereas that of lagging strand is discontinuous in the form of segment call Okazaki fragments

42) C) Leu - lys- Cys - Phe

43)A)GAG-UUC - ACG-AAG

44) D) stop codons

Explanation : these Codons are responsible for termination of translation and they do not code for any amino acids

45) D) tRNA

46) D)