Molecular Genetics MCQs with Answers

adminJune 13, 2024Last Updated: October 15, 2024

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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: This is special study of genetics that focuses attention at the molecular level on genes. It deals with how genetic information is encoded, replicated, and expressed. This insight provides important understanding of the mechanisms by which inheritance and gene regulation are tied.

Major themes in molecular genetics include the structure and function of genes as well as their regulation. The scientists that conduct this research analyze DNA sequence in genes, DNA transcription into RNA, and also translation of RNA into proteins. Above knowledge is used to describe the phenomena that changes of DNA cause diseases and characteristics. Among the very useful methods for the analysis of genetic material, they are PCR, gel electrophoresis, and DNA sequencing.

Of course, the greatest value of molecular genetics is certainly CRISPR-Cas9-the innovative tool impacting the possibility of gene editing at the precise level of DNA segments for the sake of potential cures in genetic disorders and the consequent creation of GMOs.

It is the sister arm of genomics and studies whole genomes to understand genetic variability and susceptibility to disease. Molecular genetics is an appropriate core area of personalized medicine, wherein genetic information is applied to each step of management to the individual patient.

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 structure of DNA was first described by ____.

Darwin

Watson and Crick

Mendel

2 / 40

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

tRNA

mRNA

rRNA

3 / 40

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

Translation

Replication

Transcription

4 / 40

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

3'-TAGCATGC-5'

3'-UAGCAUGC-5'

5'-TAGCATGC-3'

5 / 40

The enzyme responsible for unwinding DNA during replication is ____.

Polymerase

Ligase

Helicase

6 / 40

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

Transcription

Translation

RNA interference

7 / 40

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

RNA polymerase

DNA polymerase

Ligase

8 / 40

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

RNA polymerase

Helicase

DNA polymerase

9 / 40

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

Transcription

Replication

Translation

10 / 40

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

Translation

Replication

Transcription

11 / 40

The base that pairs with adenine in DNA is ____.

Thymine

Guanine

Cytosine

12 / 40

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

Point mutation

Frameshift mutation

Chromosomal mutation

13 / 40

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

Chromosome packing

DNA replication

Gene regulation

14 / 40

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

Ligase

Helicase

Primase

15 / 40

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

Replication

Transcription

Translation

16 / 40

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

Ligase

Polymerase

Restriction enzyme

17 / 40

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

DNA

Protein

RNA

18 / 40

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

Helicase

Polymerase

Ligase

19 / 40

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

Codon

Gene

Anticodon

20 / 40

The molecule that carries genetic information in cells is ____.

Protein

RNA

DNA

21 / 40

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

Enhancer

Promoter

Terminator

22 / 40

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

Exon

Intron

Codon

23 / 40

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

DNA splicing

RNA splicing

Protein splicing

24 / 40

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

Ligase

RNA polymerase

DNA polymerase

25 / 40

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

Transcription

Translation

Replication

26 / 40

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

Silent mutation

Point mutation

Frameshift mutation

27 / 40

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

Terminator

Promoter

Coding sequence

28 / 40

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

DNA methylation

Alternative splicing

RNA interference

29 / 40

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

Replication

Transcription

Translation

30 / 40

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

Promoter

Terminator

Enhancer

31 / 40

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

Anticodon

Amino acid

Codon

32 / 40

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

Polymerase

Helicase

Ligase

33 / 40

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

tRNA

rRNA

mRNA

34 / 40

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

Codon

Gene

Anticodon

35 / 40

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

tRNA

rRNA

mRNA

36 / 40

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

rRNA

mRNA

tRNA

37 / 40

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

Helicase

Polymerase

Ligase

38 / 40

The building blocks of DNA and RNA are ____.

Amino acids

Nucleotides

Monosaccharides

39 / 40

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

Chromosome

Codon

Gene

40 / 40

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

Transcription

Translation

Replication

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adminJune 13, 2024Last Updated: October 15, 2024

0 25 2 minutes read