Structure of DNA and RNA - Applications
Q. In which part of the cell does transcription occur?
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A.
Nucleus
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B.
Cytoplasm
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C.
Ribosome
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D.
Mitochondria
Solution
Transcription occurs in the nucleus where DNA is transcribed into mRNA.
Correct Answer: A — Nucleus
Q. What is the primary function of mRNA?
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A.
To store genetic information
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B.
To transport amino acids
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C.
To carry genetic information from DNA to ribosomes
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D.
To catalyze biochemical reactions
Solution
mRNA carries genetic information from DNA to ribosomes for protein synthesis.
Correct Answer: C — To carry genetic information from DNA to ribosomes
Q. Which of the following is a component of RNA but not DNA?
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A.
Thymine
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B.
Uracil
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C.
Deoxyribose
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D.
Adenine
Solution
RNA contains uracil instead of thymine, which is found in DNA.
Correct Answer: B — Uracil
Q. Which technique is used to amplify DNA?
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A.
Gel electrophoresis
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B.
Polymerase chain reaction (PCR)
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C.
DNA sequencing
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D.
Cloning
Solution
Polymerase chain reaction (PCR) is a technique used to amplify specific DNA sequences.
Correct Answer: B — Polymerase chain reaction (PCR)
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