Q: Which of the following sequences correctly represents the central dogma of molecular biology?

$$\text{DNA} \rightarrow \text{RNA} \rightarrow \text{Protein}$$

Question 1

Which of the following best describes the process of DNA replication?

Accepted Answer

DNA is duplicated, producing two identical double-stranded DNA molecules.

Question 2

During transcription, which enzyme is primarily responsible for synthesizing RNA from a DNA template?

Accepted Answer

RNA polymerase

Question 3

Which of the following sequences correctly represents the central dogma of molecular biology?

Accepted Answer

$$	ext{DNA} ightarrow 	ext{RNA} ightarrow 	ext{Protein}$$

Question 4

Which of the following is NOT a function of mRNA?

Accepted Answer

Forming the core structure of ribosomes

Question 5

A mutation occurs in the DNA sequence. Which process is most directly affected first?

Accepted Answer

Transcription

Question 6

Which of the following best describes the role of tRNA during translation?

Accepted Answer

tRNA carries amino acids to the ribosome and matches them to the coded mRNA message.

Question 7

Which enzyme is responsible for joining Okazaki fragments during DNA replication?

Accepted Answer

Ligase

Question 8

If a DNA strand has the sequence 5'-ATCGGTA-3', what is the complementary RNA sequence produced during transcription?

Accepted Answer

5'-UAGCCAU-3'

Question 9

Which of the following statements about protein synthesis is correct?

Accepted Answer

Transcription produces mRNA from a DNA template.

Question 10

Which of the following best explains why mutations in DNA can lead to changes in protein structure?

Accepted Answer

Mutations change the sequence of nucleotides in DNA, which can alter the mRNA and thus the amino acid sequence of the protein.

Question 11

Which process involves the conversion of the information in mRNA into a sequence of amino acids?

Accepted Answer

Translation

Question 12

Which of the following is a correct pairing of DNA and RNA bases during transcription?

Accepted Answer

Cytosine pairs with Guanine

Question 13

Which of the following best describes the function of rRNA?

Accepted Answer

rRNA forms the core of the ribosome and catalyzes peptide bond formation.

Question 14

A patient is diagnosed with a genetic disorder caused by a single nucleotide substitution in a gene. Which of the following is the most likely consequence?

Accepted Answer

The protein produced may have a single amino acid change, potentially altering its function.

Question 15

Which of the following is a real-life application of understanding protein synthesis?

Accepted Answer

Developing gene therapies to treat genetic diseases.

Protein Synthesis: DNA and RNA Structure, Transcription, and Translation

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