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EKB – lecture 1
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Question 1 of 20
1. Question
What type of bond forms between base pairs in DNA to hold the two strands together in a double helix?
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Question 2 of 20
2. Question
•Nitrogenous bases present in the DNA can be grouped into two categories on the basis of the nitrogenous rings that they contain. What are these two categories of bases called?CorrectIncorrect -
Question 3 of 20
3. Question
Which of the following describes the 5’ end of DNA?
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Question 4 of 20
4. Question
•Which of the following nitrogenous bases has a double-ring structure?CorrectIncorrect -
Question 5 of 20
5. Question
•Which of the following nitrogenous bases is correctly paired?CorrectIncorrect -
Question 6 of 20
6. Question
•In a section of DNA that contains 100 bases in total, 20 of these bases are thymine. Which of the following is the correct number of adenine and guanine bases?CorrectIncorrect -
Question 7 of 20
7. Question
•A simple diagram of the structure of DNA is provided. What part of this structure is indicated by label X?
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Question 8 of 20
8. Question
•Between which DNA bases do 2 hydrogen bonds form?CorrectIncorrect -
Question 9 of 20
9. Question
•The diagram provided shows a simple outline of the structure of a single DNA nucleotide.•Which of the following options lists the correct components labeled as X, Y, and Z respectively?
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Question 10 of 20
10. Question
•Which of the following is true about thymine?CorrectIncorrect -
Question 11 of 20
11. Question
Griffith’s experiment demonstrated that genetic material can be passed between the cells of different strains of bacteria. What term is now given to this process?
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Question 12 of 20
12. Question
•Which of these enzymes is capable of hydrolyzing DNA?CorrectIncorrect -
Question 13 of 20
13. Question
•Which of the following statements about chromosomes is true?CorrectIncorrect -
Question 14 of 20
14. Question
•Before it was established that DNA was the genetic material, which biological molecule was commonly believed to carry the genetic information?CorrectIncorrect -
Question 15 of 20
15. Question
•Which of the following statements is true?•RNA is the genetic material of all life-forms.•DNA is not stable and is continuously degraded.CorrectIncorrect -
Question 16 of 20
16. Question
•Which of the following were used in the Hershey and Chase experiment to confirm that DNA is the genetic material?CorrectIncorrect -
Question 17 of 20
17. Question
•Which of the following scientists was the first to demonstrate the process now known as bacterial transformation?CorrectIncorrect -
Question 18 of 20
18. Question
•Which of the following is not true about what is shown in the figure?
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Question 19 of 20
19. Question
•What did the Hershey and Chase experiment confirm after tracing the sulfur and phosphorus radioactive isotopes of phages that infect bacteria?CorrectIncorrect -
Question 20 of 20
20. Question
•The genetic material of all the following is DNA except ,…………….. whose genetic material may be DNA or RNA.CorrectIncorrect