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RNA and Gene Expression Quiz

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Questions and Answers

What is the function of MiRNAs in gene expression control?

Facilitating aminoacyl-tRNA binding

Directing initiation factors during translation

Controlling gene expression by base pairing (correct)

Altering codon sequences for new proteins

Which of the following antibiotics blocks the peptidyl transferase reaction on ribosomes?

Streptomycin

Ampicillin

Chloramphenicol (correct)

Tetracycline

What is the significance of the Wobble position in the genetic code?

It encodes for rare amino acids such as methionine

It allows for nonstandard base pairing and degeneracy (correct)

It catalyzes peptide bond formation in ribosomes

It specifies the start codon for translation

Which type of mutation results in a change to a stop codon in a gene sequence?

Nonsense mutation Signup and view all the answers

What is the role of release factors in translation?

Signaling ribosomes to stop translation Signup and view all the answers

What is a characteristic feature of prokaryotic mRNAs regarding their coding ability?

(Polysistronic) nature encoding several proteins Signup and view all the answers

Which enzyme is responsible for adding phosphates to proteins?

(Kinase) Signup and view all the answers

(Wild type) genes are characterized by being:

(Non-mutated) in their natural form Signup and view all the answers

What is the primary role of snRNPs in RNA splicing?

(Carrying out) RNA splicing together with proteins Signup and view all the answers

What process is involved in converting signals into cellular responses?

Signal transduction Signup and view all the answers