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#Question id: 1059


A limiting factor for viral infection is

#XL - T Zoology
  1. internal metabolic temperature of the host cell.

  2. nutrition of the host cell.

  3. stage of cell cycle of the host cell.

  4. presence of specific receptor molecules on the host cell.


Answer:- Option(s): 4


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#Question id: 27336

#XL - T Zoology

Match the nitrogenous bases in Group I with their corresponding chemical names in Group II.

 Group I Group II
 P. Adenine 1. 2-Amino-6-oxypurine
 Q. guanine 2. 6-Aminopurine
 R. cytosine 3. 4-aminopyridine-2(1H)-one 
 S. thymine 4. 5-methyluracil
 T. Uracil 5. 2, 4-Dioxypyrimidine

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#Question id: 27337

#XL - T Zoology

The approximate number of nucleotides in tRNA molecule is ________?

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#Question id: 27338

#XL - T Zoology

In every cell, the number of tRNA molecules is at least_______?

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#Question id: 27339

#XL - T Zoology

The number of base pair in a single turn of B-form DNA about the axis of the molecule is_____?

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#Question id: 27340

#XL - T Zoology

The distance spanned by one turn of B form DNA is____?

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#Question id: 27347

#XL - T Zoology

The width (helical diameter) of the double helix in B-form DNA in nm is______?

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