Gene Expression and Protein Synthesis

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What is the total number of possible codons in the triplet code?

43

21

64 (correct)

61

What is the result of a nonsense mutation?

A change in the amino acid sequence

Premature termination of translation (correct)

No change in the amino acid sequence

New or enhanced activity of a protein

What is the characteristic of the genetic code that allows more than one codon to specify a particular amino acid?

Degeneracy (correct)

Ambiguity

Mutability

Universality

What is the effect of an insertion or deletion mutation on the reading frame?

It may alter the reading frame and change many codons Signup and view all the answers

What is a characteristic of a conditional mutation?

It causes a mutant phenotype in only a certain environment Signup and view all the answers

What is the result of a mutation that affects the survival of the organism?

Lethal mutation Signup and view all the answers

What is the process by which DNA directs protein synthesis?

Transcription and translation Signup and view all the answers

What is the function of RNA polymerase?

Producing mRNA during transcription Signup and view all the answers

Which component of a cell is responsible for the synthesis of polypeptides?

Ribosomes Signup and view all the answers

What is the role of codons in protein synthesis?

Coding for specific amino acids in a polypeptide Signup and view all the answers

Which stage of gene expression involves the synthesis of a polypeptide?

Translation Signup and view all the answers

What is the function of the genome in an organism?

Determining physical traits Signup and view all the answers

Gene Expression and Protein Synthesis

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Questions and Answers

What is the total number of possible codons in the triplet code?

What is the result of a nonsense mutation?

What is the characteristic of the genetic code that allows more than one codon to specify a particular amino acid?

What is the effect of an insertion or deletion mutation on the reading frame?

What is a characteristic of a conditional mutation?

What is the result of a mutation that affects the survival of the organism?

What is the process by which DNA directs protein synthesis?

What is the function of RNA polymerase?

Which component of a cell is responsible for the synthesis of polypeptides?

What is the role of codons in protein synthesis?

Which stage of gene expression involves the synthesis of a polypeptide?

What is the function of the genome in an organism?

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