Molecular Genetics MCQs with Answers

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

Molecular Genetics Online Quiz

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

Test Name: Molecular Genetics 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.

Molecular Genetics

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1 / 40

The process by which a cell makes an RNA copy of a gene sequence is called ____.

Transcription

Replication

Translation

2 / 40

The process by which segments of pre-mRNA are removed and remaining segments are spliced together is ____.

DNA splicing

Protein splicing

RNA splicing

3 / 40

The enzyme responsible for proofreading and correcting errors in newly synthesized DNA is ____.

Ligase

DNA polymerase

RNA polymerase

4 / 40

The process by which mRNA is decoded and a protein is synthesized is ____.

Replication

Transcription

Translation

5 / 40

The enzyme responsible for sealing nicks in the sugar-phosphate backbone of DNA is ____.

Ligase

Polymerase

Helicase

6 / 40

The molecule that carries genetic information in cells is ____.

RNA

DNA

Protein

7 / 40

The process by which a single gene can code for multiple proteins is ____.

Alternative splicing

RNA interference

DNA methylation

8 / 40

The type of mutation that results from the insertion or deletion of nucleotides in DNA is ____.

Silent mutation

Frameshift mutation

Point mutation

9 / 40

The molecule that carries amino acids to the ribosome during protein synthesis is ____.

mRNA

rRNA

tRNA

10 / 40

The site on the tRNA molecule that binds to a specific amino acid is the ____.

Amino acid

Codon

Anticodon

11 / 40

The process by which DNA is copied into RNA is called ____.

Transcription

Replication

Translation

12 / 40

The sequence of three nucleotides in mRNA that codes for a specific amino acid is ____.

Anticodon

Codon

Gene

13 / 40

The enzyme responsible for unwinding DNA during replication is ____.

Ligase

Polymerase

Helicase

14 / 40

The DNA sequence that signals the end of transcription is the ____.

Enhancer

Promoter

Terminator

15 / 40

The molecule that carries the genetic code from the nucleus to the cytoplasm during protein synthesis is ____.

tRNA

rRNA

mRNA

16 / 40

The region of a gene that does not code for protein and is removed during RNA processing is ____.

Intron

Exon

Codon

17 / 40

The enzyme responsible for adding nucleotides to a growing DNA strand during replication is ____.

RNA polymerase

DNA polymerase

Ligase

18 / 40

The DNA sequence where RNA polymerase binds to initiate transcription is the ____.

Terminator

Promoter

Enhancer

19 / 40

The process by which a cell makes a copy of its DNA is ____.

Translation

Replication

Transcription

20 / 40

The molecule that carries genetic information from generation to generation in most organisms is ____.

DNA

Protein

RNA

21 / 40

The enzyme responsible for joining Okazaki fragments during DNA replication is ____.

Ligase

Helicase

Polymerase

22 / 40

The process by which information from mRNA is used to synthesize proteins is ____.

Replication

Transcription

Translation

23 / 40

The enzyme responsible for synthesizing RNA primers during DNA replication is ____.

Ligase

Helicase

Primase

24 / 40

The type of RNA that carries amino acids to the ribosome during protein synthesis is ____.

tRNA

rRNA

mRNA

25 / 40

The enzyme responsible for synthesizing RNA from a DNA template is ____.

RNA polymerase

DNA polymerase

Helicase

26 / 40

The process by which RNA is synthesized from a DNA template is ____.

Replication

Transcription

Translation

27 / 40

The type of mutation that results in a single nucleotide change in DNA is ____.

Frameshift mutation

Chromosomal mutation

Point mutation

28 / 40

The complementary sequence to the DNA strand: 5'-ATCGTACG-3' is ____.

5'-TAGCATGC-3'

3'-UAGCAUGC-5'

3'-TAGCATGC-5'

29 / 40

The type of RNA that forms part of the ribosome and helps translate mRNA into a protein is ____.

tRNA

mRNA

rRNA

30 / 40

The base that pairs with adenine in DNA is ____.

Cytosine

Guanine

Thymine

31 / 40

The region of a gene that is transcribed into RNA is the ____.

Promoter

Terminator

Coding sequence

32 / 40

The enzyme responsible for unwinding DNA ahead of the replication fork is ____.

Helicase

Polymerase

Ligase

33 / 40

The building blocks of DNA and RNA are ____.

Monosaccharides

Nucleotides

Amino acids

34 / 40

The enzyme responsible for cutting DNA at specific sequences during recombinant DNA technology is ____.

Ligase

Restriction enzyme

Polymerase

35 / 40

The sequence of nucleotides in mRNA that specifies the order of amino acids in a protein is a ____.

Gene

Codon

Anticodon

36 / 40

The process by which RNA molecules are used to inhibit gene expression is ____.

Transcription

RNA interference

Translation

37 / 40

The sequence of nucleotides in DNA that provides instructions for making a protein is a ____.

Chromosome

Gene

Codon

38 / 40

The process by which genes are turned off or on in response to environmental changes is ____.

DNA replication

Chromosome packing

Gene regulation

39 / 40

The process by which a cell uses information from mRNA to synthesize a protein is ____.

Replication

Transcription

Translation

40 / 40

The structure of DNA was first described by ____.

Darwin

Watson and Crick

Mendel

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admin4 weeks ago

0 5 1 minute read