Q6. Which base is found in RNA but not in DNA?
- A. Thymine
- B. Cytosine
- C. Uracil
- D. Adenine
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This page provides a free online MCQ test for NEET Biology preparation, focusing specifically on the chapter Molecular Basis of Inheritance. It contains 10 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.
Key concepts covered in this specific test include Following, Statements, Responsible, Fragments, Function, and Mutations.
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Which of the following statements about tRNA is correct?
tRNA contains an anticodon that pairs with mRNA codons.
tRNA carries nucleotides to ribosomes for translation.
tRNA is not involved in translation.
tRNA binds directly to DNA to assist in replication.
Which of the following statements about operons is correct?
Operons are found only in eukaryotic cells.
An operon consists of multiple genes controlled by a single promoter.
The lac operon is always active, regardless of lactose availability.
Operons regulate DNA replication.
Which enzyme is responsible for joining Okazaki fragments on the lagging strand?
Helicase
Primase
DNA ligase
Topoisomerase
Which of the following is NOT a function of RNA?
Genetic material in some viruses
Structural component of ribosomes
Catalyst in certain biochemical reactions
Main genetic material in all living organisms
Which of the following statements about mutations is incorrect?
Mutations can be caused by radiation and chemicals.
Mutations always result in harmful effects.
Mutations can be spontaneous or induced.
Some mutations are silent and do not affect the protein sequence.
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