DNA MCQs : Here you will find MCQ Questions related to "DNA" in Biochemistry. These DNA MCQ Questions Will help you to improve your Biochemistry knowledge and will prepare you for various Examinations like Competitive Exams, Placements, Interviews and other Entrance Exmaniations.
DNA stands for?
A. Deoxyribonitric acid
B. Deoxyribonucleic acid
C. Deoxyribonuclia acid
D. Deoxyribonirate acid
Explanation: DNA Stands for Deoxyribonucleic acid.
The two DNA strands are known as?
D. All of the above
Explanation: The two DNA strands are known as polynucleotides as they are composed of simpler monomeric units called nucleotides.
A large part of DNA (more than 98% for humans) is non-coding?
C. Can be true or false
D. Can not say
Explanation: A large part of DNA (more than 98% for humans) is non-coding, meaning that these sections do not serve as patterns for protein sequences.
The nucleobases are classified into _________ types
Explanation: The nucleobases are classified into two types: the purines, A and G, which are fused five- and six-membered heterocyclic compounds, and the pyrimidines, the six-membered rings C and T.
Within eukaryotic cells, DNA is organized into long structures called?
Explanation: Within eukaryotic cells, DNA is organized into long structures called chromosomes.
What is DNA replication?
D. None of the mentioned
Explanation: Each DNA strand serves as a template for the synthesis of a new strand, producing two new DNA molecules, each with one new strand and one old strand.
Which of the following involves remarkable capacity of a short segment of DNA to move from one place to another?
A. DNA replication
D. DNA transposition
Explanation: A short segment of DNA with the remarkable capacity to move from one location in a chromosome to another.
Where does RNA polymerase bind DNA?
D. None of the above
Explanation: Transcription initiation occurs when RNA polymerase binds at specific DNA sequences called promoters.
Which of the following has the self-repairing mechanisms?
A. DNA and RNA
B. DNA, RNA and protein
C. Only DNA
D. DNA and proteins
Explanation: Only DNA has a self-repairing mechanism
DNA is a long polymer made from repeating units called nucleotides.
C. Can be yes or no
D. Can not say
Explanation: Yes, DNA is a long polymer made from repeating units called nucleotides