A novel species with double-stranded genetic material consists of 5 bases namely P , Q , R , S , T , with percentage given below. P Q R S T Percentage 22 28 22 12 16 Based on the above information, which one of the following inferences is not supported by the observations?

S base pairs with T and Q base pairs with R

S base pairs with Q and T base pairs with Q

P base pairs with R and S base pairs with Q

P base pairs with R and T base pairs with Q

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A bacteriophage $T 2$ particle contains within its head a double-stranded $B$ -from DNA of molecular weight $1.2 \times 10^{8} Da .$ Assume that the head of a $T 2$ Phage particle is of $210 nm$ in length and the average molecular weight of a nucleotide is $330 Da .$ The length of the $T 2$ genome is in the range of

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Important Questions on Molecular Basis of Inheritance

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 26 - Molecular Basis of Inheritance>KVPY Aptitude Test - Stream SX 2018>Q 6

A novel species with double-stranded genetic material consists of

5

bases namely

P, Q, R, S, T,

with percentage given below.

	$P$	$Q$	$R$	$S$	$T$
Percentage	$22$	$28$	$22$	$12$	$16$

Based on the above information, which one of the following inferences is not supported by the observations?

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 26 - Molecular Basis of Inheritance>KVPY Aptitude Test - Stream SX (19 Nov 2017)>Q 7

Which one of the following processes in E. coli does not directly involve

RNA

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 26 - Molecular Basis of Inheritance>KVPY Aptitude Test - Stream SX (19 Nov 2017)>Q 8

Which ONE of the following statements is INCORRECT for translation in cytoplasm?

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 26 - Molecular Basis of Inheritance>KVPY Aptitude Test - Stream SX (19 Nov 2017)>Q 9

Frederick Griffith performed an experiment where mice were killed when injected with a mixture of Heat-Killed

S

-type Streptococcus

(HKS)

and Live

R

-type Streptococcus

(LRS)

but not with

HKS

LRS

separately. Mice were killed because

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 26 - Molecular Basis of Inheritance>KVPY Aptitude Test - Stream SX (19 Nov 2017)>Q 10

In an experiment, bacteria were infected with

{}^{32}P

labelled virus in a ratio of

5 : 1

. The culture was rigorously shaken followed by centrifugation. Radioactivity was:

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 26 - Molecular Basis of Inheritance>KVPY Aptitude Test - Stream SX (5 Nov 2017)>Q 12

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?
Question Image

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 26 - Molecular Basis of Inheritance>KVPY Aptitude Test - Stream SX (5 Nov 2017)>Q 13

The molecular weight of E coil. DNA is

3.1 \times 10^{9} g / m o l

. 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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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 26 - Molecular Basis of Inheritance>KVPY Aptitude Test - Stream SX 2016>Q 14

In the presence of glucose and lactose, Escherichia coli utilizes glucose. However, lactose also enters the cells because?

A bacteriophage T2 particle contains within its head a double-stranded B-from DNA of molecular weight 1.2×108 Da. Assume that the head of a T2 Phage particle is of 210nm in length and the average molecular weight of a nucleotide is 330 Da. The length of the T2 genome is in the range of

Important Questions on Molecular Basis of Inheritance

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