NEET Biology MCQ: NCERT DNA & Nucleosome | NEET.Guide Questions

Which histone protein is NOT a core component of the nucleosome?

A

H2A

B

H2B

C

H3

D

H1

Question Tags

📚 Subject:Botany

📑 Chapter:Molecular Basis of Inheritance

🎓 Ncert Level:Remembering

🎯Difficulty :Hard

⚡ Time Required :1 mins

🔄Ncert Concepts :DNA Packaging, Histones

Related Questions

Which base pairs with Guanine in DNA?

A

Adenine

B

Thymine

C

Uracil

D

Cytosine

Question Tags

📚 Subject:Botany

📑 Chapter:Molecular Basis of Inheritance

🎓 Ncert Level:Remembering

🎯Difficulty :Easy

⚡ Time Required :0.5 mins

🔄Ncert Concepts :DNA, Base pairing

In a DNA, percentage of thymine is $20\%$ what is the percentage of guanine?

A

$20\%$

B

$40\%$

C

$30\%$

D

$50\%$

Question Tags

📚 Subject:Botany

📑 Chapter:Molecular Basis of Inheritance

🎓 Ncert Level:Application

🎯Difficulty :Easy

⚡ Time Required :2 mins

🔄Ncert Concepts :DNA structure, Chargaff's rules, base pairing

In which stage chromatin fibers are coiled and condensed to form chromosomes?

A

Metaphase

B

Telophase

C

Anaphase

D

Prophase

Question Tags

📚 Subject:Botany

📑 Chapter:Molecular Basis of Inheritance

🎓 Ncert Level:Remembering

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :cell cycle, mitosis, chromosome structure

If the total number of base pairs in a human DNA is $6.6 imes 10^9$ bp and each base pair extends for $0.34$ nm, what would be the approximate length of the DNA if it were stretched out?

A

2.2 m

B

0.22 m

C

22 m

D

220 m

Question Tags

📚 Subject:Botany

📑 Chapter:Molecular Basis of Inheritance

PYQ YEAR: 2020

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :DNA structure, unit conversion

Which of the following nitrogenous bases are purines found in both DNA and RNA?

A

Adenine and Guanine

B

Cytosine and Thymine

C

Uracil and Thymine

D

Guanine and Uracil

Question Tags

📚 Subject:Botany

📑 Chapter:Molecular Basis of Inheritance

PYQ YEAR: 2019

🎓 Ncert Level:Remembering

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :Nitrogenous bases, Purines, DNA, RNA

Purines found both in DNA and RNA are

A

Adenine and thymine

B

Adenine and guanine

C

Guanine and cytosine

D

Cytosine and thymine

Question Tags

📚 Subject:Botany

📑 Chapter:Molecular Basis of Inheritance

🎓 Ncert Level:Remembering

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :Purines, DNA, RNA, Nitrogenous bases

Purines posses nitrogen at

A

1, 2, 4 and 6 positions

B

1, 3, 5 and 7 positions

C

1, 3, 7 and 9 positions

D

1, 2, 6 and 8 positions

Question Tags

📚 Subject:Botany

📑 Chapter:Molecular Basis of Inheritance

🎓 Ncert Level:Remembering

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :Purine structure, Nitrogen positions

Which of the following is not relevant to the structure of double helical DNA?

A

Deoxyribose sugar

B

Nitrogenous bases

C

Hydrogen bonds

D

Ribose sugar

Question Tags

📚 Subject:Botany

📑 Chapter:Molecular Basis of Inheritance

🎓 Ncert Level:Understanding

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :DNA structure, double helix, nucleotide, deoxyribose, phosphate

In DNA helix presence of hydrogen bonds was first observed by?

A

Watson

B

Crick

C

Pauling

D

All

Question Tags

📚 Subject:Botany

📑 Chapter:Molecular Basis of Inheritance

🎓 Ncert Level:Remembering

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :DNA structure, hydrogen bonds, history of science

Genetic material in most of the organisms?

A

DNA

B

RNA

C

Both

D

None

Question Tags

📚 Subject:Botany

📑 Chapter:Molecular Basis of Inheritance

🎓 Ncert Level:Remembering

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :Genetics, Nucleic Acids, DNA, RNA

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