Biology: RNA and DNA Synthesis Quiz

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What is the primary difference between DNA and RNA in terms of their nitrogenous bases?

RNA contains guanine instead of cytosine

RNA contains uracil instead of thymine (correct)

RNA contains adenine instead of guanine

RNA contains cytosine instead of adenine

What is the primary function of restriction enzymes?

To cut DNA at specific restriction sites (correct)

To bind to mRNA and initiate translation

To make copies of DNA quickly

To remove introns from RNA

What is the relationship between introns and exons in a gene?

Introns and exons are both coding regions of a gene

Introns are non-coding regions and exons are coding regions (correct)

Introns and exons are both non-coding regions of a gene

Introns are coding regions and exons are non-coding regions

What is the primary purpose of the polymerase chain reaction (PCR) technique?

To produce large amounts of DNA quickly (D) Signup and view all the answers

Which of the following correctly describes the process of transcription?

Transcription is the process by which DNA makes RNA (A) Signup and view all the answers

What is the role of RNA processing in protein synthesis?

RNA processing occurs after transcription but before translation, and it removes introns (C) Signup and view all the answers

Which of the following processes involves the removal of introns from the initial RNA transcript?

RNA processing (B) Signup and view all the answers

In the process of transcription, which of the following is involved in the initiation step?

RNA polymerase (C) Signup and view all the answers

Which technique is commonly used to amplify specific DNA sequences?

Polymerase Chain Reaction (PCR) (D) Signup and view all the answers

During translation, which of the following molecules carries the amino acid to the ribosome?

tRNA (A) Signup and view all the answers

What is the role of restriction enzymes in molecular biology?

Cutting DNA at specific recognition sequences (D) Signup and view all the answers

Which of the following processes occurs in the nucleus of eukaryotic cells?

Both B and C (A) Signup and view all the answers

Which of the following is NOT a step involved in the process of transcription?

Formation of a polypeptide chain (B) Signup and view all the answers

Which of the following techniques is used to amplify a specific region of DNA?

Polymerase chain reaction (PCR) (D) Signup and view all the answers

What are the molecular scissors referred to in the context of DNA manipulation?

Restriction enzymes (B) Signup and view all the answers

What is the term used to describe the combination of DNA from two different sources into a single cell?

Recombinant DNA technology (C) Signup and view all the answers

Which of the following statements about introns is correct?

Introns are non-coding regions of DNA that are removed during RNA processing. (C) Signup and view all the answers

What is the primary function of RNA polymerase in the context of gene expression?

To synthesize RNA from a DNA template (B) Signup and view all the answers