MCQ for grade 12 on griffith experiment, macleod and hershey and chase
Quiz by Prashansa Raizada
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- Q1What was the main purpose of the MacLeod and McCarty experiment?To explore the function of RNA in bacterial transformation.To compare the efficiency of transformation between different species of bacteria.To investigate the role of proteins in bacterial transformation.To determine whether DNA is the genetic material responsible for transformation in bacteria.To study the replication of DNA in bacterial cells.30s
- Q2
What was the primary focus of Griffith's transforming experiment?
Investigating the role of bacteria in diseases
Demonstrating bacterial transformation
identifying the structure of DNA
Discovering the genetic code
30s - Q3
Which of the following conclusions was drawn from the Hershey and Chase experiment?
Proteins are the genetic material in viruses
DNA is the genetic material in viruses
RNA is the genetic material in viruses
Lipids are the genetic material in viruses
30s - Q4
Which of the following pairs of scientists confirmed that DNA, not protein, carries genetic information?
Hershey and Chase
Mendel and Darwin
Watson and Crick
Avery and MacLeod
30s - Q5
What did the Griffith experiment reveal about bacterial transformation?
Bacterial colonies could be transformed into viruses
Heat could destroy the transforming factor
DNA was not involved in transformation
Genetic information could be transferred between bacteria
30s - Q6
Which of the following nitrogenous bases is NOT found in DNA?
Adenine (A)
Uracil (U)
Thymine (T)
Cytosine (C)
30s - Q7
The DNA double helix is stabilized by which type of chemical bonds between complementary base pairs?
Ionic bonds
Van der Waals forces
Covalent bonds
Hydrogen bonds
30s - Q8
What is the role of histone proteins in DNA packaging?
They condense and package DNA into chromatin.
They serve as enzymes for DNA replication.
They help maintain the stability of the DNA double helix. c) They condense and package DNA into chromatin. d) They decode the genetic information in DNA.
They decode the genetic information in DNA.
30s - Q9
In eukaryotic cells, DNA is most tightly packaged during which phase of the cell cycle?
Mitosis
S phase
G1 phase
G2 phase
30s - Q10
Which of the following base pairs is found in DNA?
Adenine-Guanine
Adenine-Thymine
Adenine-Cytosine
Adenine-Uracil
30s