Class 12 Chemistry Chapter 14 Biomolecules Short Questions with Answers | Class 12 Chemistry Chapter 14 Biomolecules Quiz

(1) The type of sugar in DNA are

[A] triose

[B] tetrose

[C] pentose

[D] hexose

Answer: pentose

(2) The width of DNA molecule is

[A] 15 Ao

[B] 3.4 Ao

[C] 20 Ao

[D] 25 Ao

Answer: 20 Ao

(3) The length of DNA having 23 base pairs is

[A] 78 Ao

[B] 78.4 Ao

[C] 78.2 Ao

[D] 74.8 Ao

Answer: 74.8 Ao

(4) Left handed DNA

[A] A-DNA

[B] B-DNA

[C] Z-DNA

[D] C-DNA

Answer: Z-DNA

(5) Z-DNA have a

[A] Double helical nature

[B] Zig-Zag apperarance

[C] uracil base

[D] single stranded nature

Answer: Zig-Zag apperarance

(6) A short length of DNA molecule has 80 thymine and 80 guanine bases. The total number of nucleotide in the DNA fragment is

[A] 160

[B] 40

[C] 320

[D] 640

Answer: 320

(7) RNA is the genetic material in

[A] Viruses only

[B] In some viruses and some prokaryotes

[C] In some viruses and some prokaryotes and rarely in eukaryotes

[D] Only in some viruses

Answer: Only in some viruses

(8) RNA is

[A] Single stranded

[B] Double stranded

[C] Triple stranded

[D] Both a and b

Answer: Single stranded

(9) The sugar in RNA is

[A] Deoxyribose

[B] Ribose

[C] Hexose

[D] Fructose

Answer: Ribose

(10) Nucleotides in RNA are joined by

[A] 3’5’ phosphodiester bond

[B] 3’4’ phosphodiester bond

[C] 3’2’ phosphodiester bond

[D] 3’6’ phosphodiester bond

Answer: 3’5’ phosphodiester bond

(11) Thymine in DNA is replaced by

[A] Guanine in RNA

[B] Adenine in RNA

[C] Cytosine in RNA

[D] Uracil in RNA

Answer: Uracil in RNA

(12) The most abundant type of RNA in the cell is

[A] rRNA

[B] mRNA

[C] tRNA

[D] hnRNA

Answer: rRNA

(13) Which of the following RNA serves as adaptor molecule during protein synthesis

[A] rRNA

[B] mRNA

[C] tRNA

[D] hnRNA

Answer: tRNA

(14) rRNA is synthesised in

[A] nucleus

[B] Cytoplasm

[C] RER

[D] Nucleolus

Answer: Nucleolus

(15) cDNA is

[A] complementary to mRNA

[B] complementary to rRNA

[C] complementary to tRNA

[D] complementary to hnRNA

Answer: complementary to mRNA

(16) Amino acids are attached to the

[A] acceptor arm of tRNA

[B] anti-codon arm of tRNA

[C] codon arm of tRNA

[D] none of these

Answer: acceptor arm of tRNA

(17) Ribozymes are

[A] enzymes with catalytic activity

[B] RNAs with catalytic activity

[C] proteins with catalytic activity

[D] nucleic acids with catalytic activity

Answer: RNAs with catalytic activity

(18) RNA is primarily seen in

[A] nucleus

[B] Cytoplasm

[C] RER

[D] SER

Answer: Cytoplasm

(19) Ribose sugar in RNA is

[A] D-ribose

[B] L-ribose

[C] Both L and D form

[D] None of these

Answer: D-ribose

(20) Which of the virus has double stranded RNA as genetic material?

[A] Tobacco mosaic virus

[B] Influenza virus

[C] Rous Sarcoma virus

[D] Reoviruses

Answer: Reoviruses

GkSeries.com

Class 12 Chemistry Chapter 14 Biomolecules MCQs | Class 12 Chemistry Chapter 14 Biomolecules Short Questions with Answers

By Gkseries see more questions

Please share this page

Chapters

Teacher Eligibility Test