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The regulatory proteins are the accessory proteins that interact with RNA polymerase and affect its role in transcription. Which of the following statements is true about regulatory proteins?

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Important Questions on Molecular Basis of Inheritance

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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Operon Concept
The molecular weight of E coil. DNA is 3.1×109 g/mol. The average molecular weight of the nucleotide pair is 660 g/mol and each nucleotide pair contributes to 0.34 nm to the length of DNA. The length of E coli DNA molecule will be approximately:
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Operon Concept
Which one of the following is not applicable to RNA?
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Operon Concept
Proteins P, Q, and R are associated with an intact organellar membrane in a cell. If the intact organelle is treated with a high ionic strength buffer, only protein R remained associated with the membrane fraction. Based on this, one could conclude that:
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Operon Concept
In sea urchin DNA, which is double-stranded, 17% of the bases were shown to be cytosine. What are the percentages of other three bases expected to be present in this DNA?
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Operon Concept
Identify the correct order of organization of genetic material from largest to smallest :
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Operon Concept
Nuclear envelope is a derivative of:
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Operon Concept
Match the columns and identify the correct option.
 
  Column I   Column II
A Thylakoids (i) Disc-shaped sacs in Golgi apparatus
B Cristae (ii) Condensed structure of DNA
C Cisternae (iii) Flat membranous sacs in stroma
D Chromatin (iv) Infoldings in mitochondria
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Operon Concept
The equivalent of a structural gene is:
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Operon Concept
Root pressure is usually acidic because:
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Operon Concept
If you suspect major deficiency of antibodies in a person, to which of the following would you like for confirmation evidence?
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Operon Concept
Gene regulation governing lactose operon of E. coli that involves the lac I gene product is:
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Operon Concept
Microtubules are the constituents of:
HARD
Biology>Genetics and Evolution>Molecular Basis of Inheritance>Operon Concept
Select the correct matching in the following pairs:
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Operon Concept
The schematic below describes the states of the lac operon in the absence of lactose. Which ONE of the following happens when lactose is present in the cell?
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Operon Concept
Which one of the following is not an inclusion body found in prokaryotes?
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Operon Concept
Select the mismatch.
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Operon Concept
Select the wrong statement.
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Operon Concept
Chromatophores take part in:
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Operon Concept

Mitochondria and chloroplast are:

(i) Semi - autonomous organelles

(ii) Formed by the division of pre-existing organelles and they contain DNA but lack protein synthesizing machinery

Which one of the following option is correct?

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Biology>Genetics and Evolution>Molecular Basis of Inheritance>Operon Concept
Fertilization in humans is practically feasible only if: