Basic Processes — Practice Quiz
CBSE · Class 11 · Biotechnology
Try a 4-question quiz on Basic Processes for CBSE Class 11 Biotechnology: tap an answer to check it and see why. 86 questions in the full chapter test.
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0/4Tap an answer to check it instantly. No sign-up needed for these 4.
What is the best definition of DNA as the genetic material in organisms?
What did Griffith call the phenomenon in which harmless bacteria changed into virulent bacteria?
Which strain of Streptococcus pneumoniae is virulent and forms smooth colonies?
Which feature makes the S strain of Streptococcus pneumoniae virulent?
Sample Questions
What was the main conclusion of Avery, Macleod and McCarty's experiment?
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DNA is the likely transforming principle
When DNase destroyed transformation, it showed that DNA was essential for the transforming activity.
Which enzyme treatment stopped transformation in Avery, Macleod and McCarty's experiment?
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DNase
DNase degrades DNA. Since transformation did not occur after DNase treatment, DNA was identified as the transforming principle.
Which molecule enters bacterial cells in the Hershey-Chase experiment?
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DNA from the phage
The radioactive DNA label entered the bacterial cells, showing that DNA entered and carried genetic information.
Which isotope labelled DNA in the Hershey-Chase experiment?
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32P
DNA contains phosphorus, so radioactive 32P was used to label the DNA of T2 phages.
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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