12th Class MCQs

12th Class Biology Chapter 20 MCQs with Answers

Photo of Admin AdminApril 5, 2024
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12th Class Biology Chapter 20 MCQs

Welcome to the 12th Class Biology Chapter 20 MCQs Practice and Quiz Tests. We are presenting you with top MCQ questions from the 12th Class Biology Chapter 20 Chromosome and DNA.

You can find all the 12th Class Biology Chapter 20 MCQs online tests on our website. These online tests are great for learning and as well as for scoring maximum marks in your Intermediate Exams. We are making these Class 12 Biology MCQs online tests for those who want full marks in their exams.

12th Class Multiple Choice Question Chapter 20 with Answers Free PDF

You can also download 12th Class Biology Questions with Answers Chapter 20 free PDF from the link provided below. To Download file in PDF click on the arrow sign at the top right corner.

Grade 12 Biology Chapter 20 Online Quiz

By presenting 3 options to choose from, 12th Class Biology Chapter 20 Quiz which cover a wide range of topics and levels of difficulty, making them adaptable to various learning objectives and preferences. You will have to read all the given answers of 12th Class Questions and Answers and click over the correct answer.

  • Test Name: 12th Class Biology Chapter 20 Quiz Practice
  • Type: Quiz Test
  • Total Questions: 40
  • Total Marks: 40
  • Time: 40 minutes

Note: Answer of the questions will change randomly each time you start the test. Practice each quiz test at least 3 times if you want to secure high marks. Once you are finished, click the View Results button. If any answer looks wrong to you in Quizzes. simply comment below this post, so that we can update the answer in the quiz section.

12th Class Biology Chapter 20 MCQs

12th Class Biology Chapter 20: Chromosome and DNA

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1 / 40

Which nitrogenous base is not found in RNA?

2 / 40

What is the role of mRNA in protein synthesis?

3 / 40

What is the complementary base pair for adenine in RNA?

4 / 40

In eukaryotic cells, where is DNA primarily found?

5 / 40

What is the role of ribosomes in protein synthesis?

6 / 40

Which type of RNA carries the genetic information from DNA to the ribosome?

7 / 40

Which nitrogenous base pairs with guanine in DNA?

8 / 40

Which type of RNA carries amino acids to the ribosome during protein synthesis?

9 / 40

What is the term for the specific sequence of nucleotides that codes for a particular protein?

10 / 40

What is the term for the specific sequence of nucleotides that signals the start of translation?

11 / 40

What is the structure of DNA known as when it is tightly coiled around proteins?

12 / 40

In eukaryotic cells, where does translation occur?

13 / 40

What is the term for the process of copying genetic information from DNA to RNA?

14 / 40

How many chromosomes are found in a human somatic cell?

15 / 40

What is the process of synthesizing RNA from a DNA template called?

16 / 40

What is the primary function of DNA?

17 / 40

What is the name of the enzyme that proofreads and repairs mistakes during DNA replication?

18 / 40

What is the term for the three-nucleotide sequence on mRNA that codes for a specific amino acid?

19 / 40

In eukaryotic cells, which organelle is responsible for protein synthesis?

20 / 40

What is the process by which RNA is synthesized from a DNA template called?

21 / 40

Which nitrogenous base pairs with adenine in RNA?

22 / 40

What is the term for the structure composed of DNA and proteins found in the nucleus of eukaryotic cells?

23 / 40

What is the function of RNA polymerase during transcription?

24 / 40

Which enzyme adds new nucleotides to the growing DNA strand during replication?

25 / 40

What is the complementary base pair for adenine in DNA?

26 / 40

What is the name of the process by which the genetic code carried by mRNA is decoded to produce a specific protein?

27 / 40

What is the name of the enzyme responsible for adding nucleotides to the growing RNA strand during transcription?

28 / 40

Which nitrogenous base is found in RNA but not in DNA?

29 / 40

What is the term for the sequence of three nucleotides on tRNA that pairs with the codon on mRNA?

30 / 40

What is the term for the specific region of a chromosome where a gene is located?

31 / 40

What is the term for a change in the sequence of nucleotides in DNA?

32 / 40

What is the function of tRNA during protein synthesis?

33 / 40

What is the name of the enzyme responsible for joining Okazaki fragments during DNA replication?

34 / 40

What is the complementary base pair for cytosine in DNA?

35 / 40

What is the name of the process by which DNA is copied to produce identical daughter molecules?

36 / 40

What is the hereditary material found in all living organisms?

37 / 40

What is the structure of DNA described as when it consists of two strands twisted around each other?

38 / 40

What is the sugar component of DNA?

39 / 40

Which enzyme is responsible for unwinding and separating the DNA strands during replication?

40 / 40

What is the function of rRNA during protein synthesis?

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Photo of Admin AdminApril 5, 2024
0 4 1 minute read
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