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Molecular Biology MCQs with Answers

Welcome to the Molecular Biology MCQs with Answers. In this post, we have shared Molecular Biology Online Test for different competitive exams. Find practice Molecular Biology Practice Questions with answers in Biology Tests exams here. Each question offers a chance to enhance your knowledge regarding Molecular Biology.

Molecular biology is that branch of the life sciences concerned with the study of molecular mechanisms in biological processes. In this regard, molecular biology has thrown much light concerning interactions between DNA and RNA as well as proteins on how genetic information is stored, replicated, and translated into functional proteins. Indeed, this field is a great leap towards understanding diseases on the cellular and molecular levels.

There are three major techniques applied in molecular biology that include PCR, gel electrophoresis, and DNA sequencing. This gives a basic framework wherein genetic manipulation and analysis bring them into gene expression, genetic variation, and the role of different proteins in cellular processes. This move has translated breakthroughs in personalized medicine, gene therapy, and biotechnology from former research in genetics.

Breaking the Relationship Between Genotype and Phenotype One of the most important goals in molecular biology is breaking the relationship between genotype and phenotype. Such disease-causing genes or genes responsible for any particular trait will be of immense significance in identifying targets in treatment and diagnosis. It also aids in developing GMOs and other biotechnological innovations.

Molecular Biology Online Quiz

By presenting 3 options to choose from, Molecular Biology 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 Molecular Biology Questions and Answers and click over the correct answer.

  • Test Name: Molecular Biology MCQ 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 click on question and comment below that question. so that we can update the answer in the quiz section.

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Molecular Biology MCQs

Molecular Biology

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1 / 40

What is the genetic code's redundancy referred to as?

2 / 40

What is the role of spliceosomes in eukaryotic gene expression?

3 / 40

What is the function of ribosomal RNA (rRNA) in protein synthesis?

4 / 40

What is the central dogma of molecular biology?

5 / 40

What is the function of the Shine-Dalgarno sequence in bacterial mRNA?

6 / 40

Which molecule serves as a template for the synthesis of complementary RNA during transcription?

7 / 40

Which enzyme is responsible for unwinding the DNA double helix during DNA replication?

8 / 40

What is the role of the Shine-Dalgarno sequence in bacterial gene expression?

9 / 40

What is the function of a restriction endonuclease in recombinant DNA technology?

10 / 40

What is the function of reverse transcriptase in retroviruses?

11 / 40

What is the function of the lac operon in bacterial gene regulation?

12 / 40

Which process involves the copying of DNA into RNA?

13 / 40

What is the role of the promoter region in gene transcription?

14 / 40

What is the function of the TATA box in eukaryotic gene transcription?

15 / 40

What is the process by which mRNA is decoded to produce a protein?

16 / 40

What is the function of DNA polymerase in DNA replication?

17 / 40

Which enzyme is responsible for adding nucleotides to the growing RNA chain during transcription?

18 / 40

What type of bond holds complementary DNA base pairs together?

19 / 40

Which enzyme is responsible for unwinding DNA during replication?

20 / 40

What is the function of chaperone proteins in molecular biology?

21 / 40

Which structure is formed when two strands of DNA are antiparallel and complementary?

22 / 40

Which technique is used to amplify a specific segment of DNA?

23 / 40

Which enzyme is responsible for cutting DNA at specific sequences during recombinant DNA technology?

24 / 40

What is the function of telomerase in eukaryotic cells?

25 / 40

What is the primary function of histones in eukaryotic chromosomes?

26 / 40

What is the function of transfer RNA (tRNA) molecules in translation?

27 / 40

Which RNA molecule carries amino acids to the ribosome during translation?

28 / 40

Which enzyme catalyzes the formation of phosphodiester bonds during DNA replication?

29 / 40

What is the function of RNA polymerase in transcription?

30 / 40

What is the primary function of DNA ligase in DNA replication?

31 / 40

What is the role of sigma factor in bacterial transcription?

32 / 40

What is the primary function of the CRISPR-Cas9 system in genome editing?

33 / 40

What is the function of the 5' cap and poly-A tail in eukaryotic mRNA?

34 / 40

Which molecule is responsible for carrying out the process of splicing during mRNA maturation?

35 / 40

What is the role of RNA interference (RNAi) in gene regulation?

36 / 40

What is the role of sigma factor in bacterial transcription?

37 / 40

What is the function of DNA ligase in recombinant DNA technology?

38 / 40

Which enzyme catalyzes the formation of phosphodiester bonds during DNA replication?

39 / 40

Which enzyme is responsible for synthesizing the RNA primer during DNA replication?

40 / 40

What is the function of topoisomerase in DNA replication?

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