DNA MCQs with Answers

DNA (Deoxyribonucleic acid) MCQ

Hello students, our topic is DNA (Deoxyribonucleic acid). DNA molecule were not known before. Some scientists were having opinion that the cell structure have a part that transmits characters to the other generation. The full form of DNA is deoxyribonucleic acid. DNA found in the nucleus because of this reason it is known as nucleic acid. DNA is double stranded molecule and it is present on the chromosome. The chromosome number is different for different individual. The structure of Deoxyribonucleic acid is discovered by James Watson and Francis Crick.

Following MCQs will help more to understand DNA (Deoxyribonucleic acid).

MCQ. 1): Which of the following carries genetic information?

a) Chlorophyll

b) Cell wall

c) DNA

d) Golgi complex

MCQ. 2): Deoxyribonucleic acid or DNA found in ………………………………………………………….

a) Chromosome

b) Mitochondria

c) Chloroplasts

d) All of them

MCQ. 3): Who was the first originator of double helix model?

a) James Watson

b) Franchis Crick

c) Both a) and b)

d) None of them

MCQ. 4): DNA stands for …………………………………………………….

a) Dioxyribosnucleic acid

b) Deoxyribonucleic acid

c) Dihydralnucleic acid

d) Disacchrideic acid

MCQ. 5):Who has given the term DNA?

a) Watson

b) Zaccharis

c) John

d) Crick

MCQ. 6): The DNA in virus can be ……………………………………………….. Stranded.

a) Only Single stranded

b) Only double stranded

c) Both single and double stranded

d) None of them

MCQ. 7):Which of the following is hereditary material in all the organisms?

a) DNA

b) Guanine

c) Thymine

d) Uracil

MCQ. 8): The DNA or Deoxyribonucleic acid is composed of ………………………………………………………..

a) Sugars

b) Phosphate backbone

c) Attached bases

d) All of them

MCQ. 9): In the DNA structure, Pyrimidines are ………………………………………………………….

a) Thymine

b) Adenine

c) Cytosine

d) a) and c)

MCQ. 10):In the DNA structure, Purines are ………………………………………………………….

a)Thymine

b)Adenine

c)Cytosine

d) b) and c)

MCQ. 11): Which of the following regions are found on DNA structure?

a) Coding

b) Non-coding

c) Both a) and b)

d) None of them

 

Answer

1) c) DNA

2) d) All of them

3) c) Both a) and b)

4) b) Deoxyribonucleic acid

5) b) Zaccharis

6) c) Both single and double stranded

7) a) DNA

8) d) All of them

9) d) a) and c)

10) d) b) and c)

11) c) Both a) and b)

 

MCQ. 12): Which of the following bond is present between base pairs?

a) Hydrogen bond

b) Oxide bond

c) Sulphide bond

d) Sodium bond

MCQ. 13): In the DNA, when two chains are complementary to each other, those chains are known as …………………………………………………………….

a) Equal chains

b) Complementary chains

c) Chargarff

d) Identical

MCQ. 14): Which of the following is known as Watson and Crick model of DNA?

a) E DNA

b) B DNA

c) P DNA

d) Q DNA

MCQ. 15): The hydrogen bond breaking between strands and separation of a double strand into two single strands is called as ………………………………………………………….

a) DNA synthesis

b) Protein Synthesis

c) DNA denaturation

d) RNA synthesis

MCQ. 16): How many bases are there in the DNA?

a) One

b) Two

c) Three

d) Four

MCQ. 17): The two strands of DNA are organized by the pairing of bases ………………………………………………. And ………………………………………………. On complementary strands.

a)B to A and T to P

b) A to T and G to C

c) T to G and E to C

d) A to G and P to R

MCQ. 18): Which of the following DNA is left handed double helix?

a) A DNA

b) B DNA

c) Z DNA

d) C DNA

MCQ. 19): When both the ends of DNA are free then it is …………………………………………………… type of DNA.

a) Linear DNA

b) Circular DNA

c) Triangular DNA

d) None of them

MCQ. 20): When the DNA doesn’t have free end then it is called as …………………………………………………..

a) Circular DNA

b) Linear DNA

c) Triangular DNA

d) All of them

MCQ. 21): Which of the following DNA is present in macronucleus and which does not transfer from one generation to another?

a) Trophic DNA

b) DNA

c) RNA

d) Genetic DNA

Answer

12) a) Hydrogen bond

13) b) Complementary chains

14) b) B DNA

15) c) DNA denaturation

16) Four

17) b) A to T and G to C

18) c) Z DNA

19) a) Linear DNA

20) a) Circular DNA

21) a) Trophic DNA


Updated: June 21, 2021 — 1:39 pm

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