The process by which an RNA is used by some types of viruses to synthesize a DNA is called
DNA replication
transcription
translation
reverse transcription
The Correct Answer is D
A. DNA replication: DNA replication copies DNA from a DNA template and does not use RNA as the template for making DNA.
B. Transcription: Transcription is the synthesis of RNA from a DNA template, not the synthesis of DNA from RNA.
C. Translation: Translation converts mRNA codons into amino acids to build proteins; it does not produce DNA.
D. Reverse transcription: Reverse transcription uses an RNA template to synthesize complementary DNA (cDNA); retroviruses use reverse transcriptase to perform this process.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. F+ cells: F+ cells contain the fertility (F) plasmid that encodes the genes required for pilus formation and DNA transfer during conjugation.
B. F− cells: F− cells lack the F plasmid and serve as recipients, not initiators, of conjugation.
C. All bacterial cells: Only cells possessing the F plasmid can initiate conjugation; therefore, not all bacterial cells are capable of this process.
Correct Answer is C
Explanation
A. mRNA: Messenger RNA provides the codon template that dictates amino acid sequence but does not physically deliver amino acids.
B. rRNA: Ribosomal RNA is part of the ribosome’s structural and catalytic core and assists in peptide bond formation, but it does not carry individual amino acids.
C. tRNA: Transfer RNA molecules carry specific amino acids to the ribosome and match their anticodon to mRNA codons, delivering the correct amino acids for incorporation into the growing polypeptide.
D. micRNA: MicroRNA (miRNA) are small regulatory RNAs involved in gene expression control, not carriers of amino acids to ribosomes.
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