NEET Biology MCQ: NCERT Transforming Principle | NEET.Guide Questions

Which observation from Griffith's experiment with Streptococcus pneumoniae provided the strongest evidence for the existence of a 'transforming principle'?

A

Live non-virulent bacteria did not cause disease in mice.

B

Heat-killed virulent bacteria did not cause disease in mice.

C

Live virulent bacteria caused disease in mice.

D

Heat-killed virulent bacteria, when mixed with live non-virulent bacteria, caused the latter to become virulent.

Question Tags

📚 Subject:Botany

📑 Chapter:Molecular Basis of Inheritance

🎯Topic:The Search Of Genetic Material

🎓 Ncert Level:Analyzing

🎯Difficulty :Hard

⚡ Time Required :1 mins

🔄Ncert Concepts :Griffith's Experiment, Transforming Principle, Bacterial Transformation, Genetic Material

Related Questions

Hershey and Chase utilized bacteriophages to demonstrate that DNA is the genetic material. What is a bacteriophage?

A

A type of bacteria

B

A bacterial enzyme

C

A virus that infects bacteria

D

A component of bacterial DNA

Question Tags

📚 Subject:Botany

📑 Chapter:Molecular Basis of Inheritance

🎯Topic:The Search Of Genetic Material

PYQ YEAR: 2023

🎓 Ncert Level:Remembering

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :DNA as genetic material, Hershey-Chase experiment

Which of the following is NOT a characteristic of a good genetic material?

A

Able to replicate accurately

B

Chemically and structurally stable

C

Must be easily degradable

D

Scope for slow changes (mutations)

Question Tags

📚 Subject:Botany

📑 Chapter:Molecular Basis of Inheritance

🎯Topic:The Search Of Genetic Material

🎓 Ncert Level:Understanding

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :Genetic Material, DNA characteristics

Which of the following radioisotope is not suitable for DNA labeling based studies?

A

${{\rm{H}}^3}$

B

${{\rm{P}}^{32}}$

C

${{\rm{N}}^{15}}$

D

${{\rm{S}}^{35}}$

Question Tags

📚 Subject:Botany

📑 Chapter:Molecular Basis of Inheritance

🎯Topic:The Search Of Genetic Material

🎓 Ncert Level:Analyzing

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :DNA structure, radioisotopes, biomolecule labeling

In their side by side experiments Hershy and chase incorporated ${}^{35}S$ into?

A

Bacterial DNA

B

Protein Capsid of Phage

C

Cytoplasm of bacteria

D

Phage DNA

Question Tags

📚 Subject:Botany

📑 Chapter:Molecular Basis of Inheritance

🎯Topic:The Search Of Genetic Material

🎓 Ncert Level:Remembering

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :Hershey-Chase experiment, radioactive labeling, bacteriophage structure, protein vs DNA

Which component of the bacteriophage was found inside the bacteria in the Hershey-Chase experiment, confirming DNA as the genetic material?

A

Radioactively labeled protein (35S)

B

Radioactively labeled DNA (32P)

C

Both radioactively labeled protein and DNA

D

Neither radioactively labeled protein nor DNA

Question Tags

📚 Subject:Botany

📑 Chapter:Molecular Basis of Inheritance

🎯Topic:The Search Of Genetic Material

PYQ YEAR: 2023

🎓 Ncert Level:Remembering

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :DNA as genetic material, Hershey-Chase experiment

If Hershey and Chase had found radioactive sulfur ( $^{35}S$ ) inside the bacteria instead of radioactive phosphorus ( $^{32}P$ ), what would have been the conclusion of their experiment?

A

DNA is the genetic material.

B

Protein is the genetic material.

C

Both DNA and protein are the genetic material.

D

Neither DNA nor protein is the genetic material.

Question Tags

📚 Subject:Botany

📑 Chapter:Molecular Basis of Inheritance

🎯Topic:The Search Of Genetic Material

PYQ YEAR: 2017

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :Molecular Basis of Inheritance, DNA as Genetic Material

In Griffith's experiment, which strain of Streptococcus pneumoniae caused the death of mice?

A

S strain (smooth)

B

R strain (rough)

C

Heat-killed S strain

D

Heat-killed R strain

Question Tags

📚 Subject:Botany

📑 Chapter:Molecular Basis of Inheritance

🎯Topic:The Search Of Genetic Material

🎓 Ncert Level:Remembering

🎯Difficulty :Easy

⚡ Time Required :0.5 mins

🔄Ncert Concepts :Griffith's Experiment, Bacterial Transformation, Streptococcus pneumoniae

What was the transforming principle identified by Avery, MacLeod, and McCarty?

A

Protein

B

RNA

C

DNA

D

Carbohydrates

Question Tags

📚 Subject:Botany

📑 Chapter:Molecular Basis of Inheritance

🎯Topic:The Search Of Genetic Material

🎓 Ncert Level:Remembering

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :Avery-MacLeod-McCarty experiment, DNA, Bacterial Transformation

Which molecule carries the genetic information in bacteriophages?

A

DNA

B

RNA

C

Protein

D

Lipids

Question Tags

📚 Subject:Botany

📑 Chapter:Molecular Basis of Inheritance

🎯Topic:The Search Of Genetic Material

🎓 Ncert Level:Remembering

🎯Difficulty :Easy

⚡ Time Required :0.5 mins

🔄Ncert Concepts :Bacteriophage, DNA, Genetic Material

In Hershey and Chase experiment the viral DNA can be labelled with?

A

${}^{32}P$

B

${}^{35}P$

C

${}^{35}S$

D

${}^{23}P$

Question Tags

📚 Subject:Botany

📑 Chapter:Molecular Basis of Inheritance

🎯Topic:The Search Of Genetic Material

🎓 Ncert Level:Remembering

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :Hershey-Chase experiment, DNA labeling, radioactive isotopes

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