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Dna Questions

Practice 16 Dna questions with detailed answers and explanations. Free MCQs, PYQs, and mock test questions for NEET, JEE, GATE, SSC and more.

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16
Total Questions
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9
Easy
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6
Medium
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1
Hard
Practice by Exam:Biology(13)Chemistry(2)Physics(1)

About dna — practice questions, PYQs & concepts

dna is a frequently-tested topic on Biology, Chemistry, Physics. ExamTest.live currently lists 16 dna questions spanning previous-year papers from 2026 to 2026, each with worked solutions and a step-by-step explanation. Use the filters on this page to focus on a specific exam, difficulty level or year — every answer key is free, no sign-up required.

dna weight in competitive exams

Across our dna question bank, the largest sources are Biology (13), Chemistry (2) and Physics (1). Click any exam chip above to drill down to that exam-specific question set.

How to use this page

  • Start easy: 9 easy dna questions are available — build fluency before moving up.
  • Target weak years: Use the year filter to focus on the most recent 2026 paper or older PYQs you have not attempted.
  • Time yourself: Every question shows the average solve time so you can benchmark your speed against other students.
  • Read every explanation: Even on questions you got right — the explanation often surfaces a faster approach you can reuse.

All Dna Questions(1–16 of 16)

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Q1easymcqBiologyNEET (UG) 20172026
0% accuracy
DNA fragments are:
Q2hardmcqBiologyNEET 2020 E12026
If the distance between two consecutive base pairs is and the total number of base pairs of a DNA double helix in a typical mammalian cell is , then the length of the DNA is approximately:
Q3mediummcqBiologyBiology
0% accuracy
Which of the following statements about molecular taxonomy is correct?
Q4mediummcqBiologyBiology
0% accuracy
Which of the following is incorrect about molecular taxonomy?
Q5mediummcqBiologyBiology
0% accuracy
How do molecular techniques contribute to modern taxonomy?
Q6easymcqPhysicsPhysics
Energy required to break one bond in is approximately:
Q7mediummcqBiologyBiology
Telomere repetitive DNA sequences control the function of eukaryotic chromosomes because they:
Q8mediummcqBiologyBiology
The length of DNA molecule greatly exceeds the dimensions of the nucleus in eukaryotic cells. How is this DNA accommodated?
Q9easymcqChemistryChemistry
In DNA, the complimentary bases are:
Q10easymcqBiologyBiology
Which pair of nitrogenous bases is wrongly matched with its category?
Q11easymcqBiologyBiology
There is no in:
Q12easymcqBiologyBiology
Transgenic plants are the ones:
Q13easymcqChemistryChemistry
The segment of which acts as the instrumental manual for the synthesis of the protein is:
Q14easymcqBiologyBiology
Which one of the following represents palindromic sequence in DNA?
Q15mediummcqBiologyBiology
If one strand of DNA has the nitrogenous base sequence as ATCTC, what would be the complementary RNA strand sequence?
Q16easymcqBiologyBiology
Transformation was discovered by:

Frequently Asked Questions

How many Dna questions are on ExamTest.live?▼
We have 16 Dna questions spread across 1 pages, covering easy, medium, and hard difficulty levels with detailed explanations.
Are Dna MCQs free?▼
Yes. All Dna questions, answers, and explanations on ExamTest.live are completely free. No account or subscription required.
Which exams include Dna questions?▼
Dna questions are commonly asked in Biology, Chemistry, Physics. You can filter by exam using the links above.
How do I practice Dna questions effectively?▼
Start with easy questions to build confidence, then tackle medium and hard ones. Use the filter buttons to sort by difficulty. Reveal the answer only after attempting each question, and read the explanation thoroughly.