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Name: The number of codon binding sites in an mRNA-ribosome complex that can
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Description: The number of codon binding sites in an mRNA-ribosome complex that can be occupied at the same time by activated tRNA molecules is; * A. 2 B. 3 C. 4 D. 5Which is a characteristics of the normal genetic code? * A. one codon can code for only one amino

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter9: Molecular Biology

Section: Chapter Questions

Problem 6RQ: A promoter is ______. a. a specific sequence of DNA nucleotides b. a specific sequence of RNA...

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The number of codon binding sites in an mRNA-ribosome complex that can be occupied at the same time by activated tRNA molecules is; *

A. 2

B. 3

C. 4

D. 5

Which is a characteristics of the normal genetic code? *

A. one codon can code for only one amino acid

B. one amino acid can have only one codon

C. one tRNA molecule can bind to only one codon

D. one aminoacyl-tRNA synthetase can react with only one tRNA

Which of the following describes the effect of a point mutation on amino acid identity in a protein? *

A. The identity of two amino acid must change

B. The identity of one amino acid may change

C. The identity of one amino acid must change

D. The identity of one amino acid never change

Which of the following statements is true regarding introns? *

A. introns are the parts of mRNA that are translated

B. introns have no function

C. In general, human genes have fewer introns than genes of other organism

D. Introns may be involved in exon shuffling

The product of the first phase of protein synthesis is; *

A. DNA molecules

B. RNA molecules

C. both DNA and RNA molecules

D. no correct response

Original strand: G G G C T A G G G C C A A , Mutant strand: G G G G C T A G G G C C A A . What type of mutation? *

A. Insertion

B. Deletion

C. Substitution

D. Nonsense

A base substitution that causes regular codon to change into another codon that codes for different amino acids is said to be; *

A. missense mutations

B. nonsense mutations

C. silent mutations

D. no correct response

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