HARD
12th CBSE
IMPORTANT
Earn 100

DNA is a polymer of nucleotides which are linked to each other by 3' - 5' phosphodiester bonds. To prevent polymerisation of nucleotides, which of the following modifications would you choose?

57.69% studentsanswered this correctly

Important Questions on Molecular Basis of Inheritance

MEDIUM
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 6 - Molecular Basis of Inheritance>MULTIPLE-CHOICE QUESTIONS>Q 14
Discontinuous synthesis of DNA occurs in one strand, because
MEDIUM
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 6 - Molecular Basis of Inheritance>MULTIPLE-CHOICE QUESTIONS>Q 15
Which of the following steps in transcription is catalysed by RNA polymerase?
MEDIUM
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 6 - Molecular Basis of Inheritance>MULTIPLE-CHOICE QUESTIONS>Q 16
Control of gene expression in prokaryotes take place at the level of
HARD
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 6 - Molecular Basis of Inheritance>MULTIPLE-CHOICE QUESTIONS>Q 17
Regulatory proteins are the accessory proteins that interact with RNA polymerase and affect its role in transcription. Which of the following statements is correct about regulatory protein?
MEDIUM
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 6 - Molecular Basis of Inheritance>MULTIPLE-CHOICE QUESTIONS>Q 18
Which was the last human chromosome to be completely sequenced?
MEDIUM
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 6 - Molecular Basis of Inheritance>MULTIPLE-CHOICE QUESTIONS>Q 19
Which of the following are the functions of RNA?
MEDIUM
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 6 - Molecular Basis of Inheritance>MULTIPLE-CHOICE QUESTIONS>Q 20
While analysing the DNA of an organism, a total number of 5386 nucleotides were found out of which the proportion of different bases were:
Adenine =29%, Guanine =17%, Cytosine =32%, Thymine =17%. Considering the Chargaff's rule, it can be concluded that:
MEDIUM
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 6 - Molecular Basis of Inheritance>MULTIPLE-CHOICE QUESTIONS>Q 21
In some viruses, DNA is synthesised by using RNA as a template. Such a DNA is called