EASY
NEET
IMPORTANT
Earn 100
Match the following columns and select the correct option
column I
(Genes of lac operon)
column II
(Function)
a. Operator gene
(i) Interacts with repressor protein
b. Promoter gene
(ii) Transcribes mRNA for polypeptide synthesis
c. Structural gene
(iii) Provides attachment site for RNA polymerase
d. Regulator gene
(iv) Controls the activity of operator gene
column I
(Genes of lac operon)
column II
(Function)
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Important Questions on Molecular Basis of Inheritance
MEDIUM
NEET
IMPORTANT
Select the incorrect match(es) from the following
| a. Minisatellites |
to |
| b. SNPs |
Due to many bases DNA differences |
| c. Frederick Sanger |
Developed method to determine amino acid sequence in proteins |
| d. VNTR | Unusual sequences of 20- 100 base pairs |
EASY
NEET
IMPORTANT
EASY
NEET
IMPORTANT
Read the following statements and choose the correct one(s).
A. During DNA replication, Adenine pairs with Uracil.
B. Chargaff's rule is applicable only for double-stranded DNA.
C. The area with a long sequence of short repetitive DNA is called satellite DNA.
EASY
NEET
IMPORTANT
EASY
NEET
IMPORTANT
Match the following columns and select the correct option.
| a. UAG | (i) Codes for amino acid Tryptophan |
| b. AUG | (ii) Start codon |
| c. UUU | (iii) Codes for phenylalanine |
| d. UGG | (iv) Nonsense codon |
EASY
NEET
IMPORTANT
a. Glucose or galactose act as inducers for the expression of the lac operon.
b. In the presence of lactose, the repressor protein binds with the lactose molecules.
c. It is an example of a repressible operon system.
d. Its regulation by repressor protein is called positive regulation.
EASY
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IMPORTANT
EASY
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IMPORTANT
A. It codes for an amino acid methionine
B. It is an initiation codon
C. It is a non-degenerate codon
