Molecular Ecology MCQs with Answers

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

Molecular Ecology Online Quiz

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

Test Name: Molecular Ecology MCQ Quiz Practice
Type: Quiz Test
Total Questions: 40
Total Marks: 40
Time: 40 minutes

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Molecular Ecology

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1 / 40

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

Joins DNA fragments

Amplifies DNA fragments

Cuts DNA at specific sequences

2 / 40

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

Splices mRNA

Terminates transcription

Initiates transcription

3 / 40

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

Southern blotting

Polymerase chain reaction (PCR)

Gel electrophoresis

4 / 40

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

Helicase

Primase

Ligase

5 / 40

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

Targeted gene editing

Protein synthesis

DNA replication

6 / 40

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

Transcription initiation site

Ribosome binding site

RNA processing

7 / 40

Which enzyme is responsible for unwinding DNA during replication?

Ligase

Helicase

Polymerase

8 / 40

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

Forms part of ribosome structure

Encodes genetic information

Carries amino acids

9 / 40

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

Ribosome binding site

RNA processing

Transcription initiation site

10 / 40

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

DNA ligase

Polymerase chain reaction (PCR)

Restriction endonuclease

11 / 40

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

Ribozyme

Spliceosome

Restriction enzyme

12 / 40

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

DNA

Protein

RNA

13 / 40

What is the function of telomerase in eukaryotic cells?

Repair DNA damage

Maintain telomere length

Synthesize RNA

14 / 40

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

Translation

Replication

Transcription

15 / 40

What is the role of spliceosomes in eukaryotic gene expression?

Replicate DNA

Transcribe mRNA

Remove introns from pre-mRNA

16 / 40

What is the function of topoisomerase in DNA replication?

Adds nucleotides

Relieves torsional strain

Proofreads DNA

17 / 40

What is the role of sigma factor in bacterial transcription?

Splices pre-mRNA

Initiates RNA polymerase binding

Transcribes mRNA

18 / 40

Which process involves the copying of DNA into RNA?

Transcription

Translation

Replication

19 / 40

What is the role of sigma factor in bacterial transcription?

Initiates RNA polymerase binding

Transcribes mRNA

Splices pre-mRNA

20 / 40

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

DNA ligase

DNA polymerase I

DNA polymerase III

21 / 40

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

Single strand

Triple helix

Double helix

22 / 40

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

Joins DNA fragments

Amplifies DNA fragments

Cuts DNA at specific sites

23 / 40

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

Metabolism of lactose

RNA processing

DNA replication

24 / 40

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

DNA polymerase

DNA ligase

RNA polymerase

25 / 40

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

Remove introns

Enhance stability and translation

Promote transcription

26 / 40

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

Ligase

Primase

Helicase

27 / 40

What is the primary function of histones in eukaryotic chromosomes?

Packaging DNA into nucleosomes

Splicing mRNA

Synthesizing RNA

28 / 40

What is the function of DNA polymerase in DNA replication?

Transcribes RNA

Translates mRNA

Synthesizes new DNA strand

29 / 40

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

Synthesizes new DNA strands

Unwinds DNA strands

Joins Okazaki fragments

30 / 40

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

DNA ligase

Helicase

RNA polymerase

31 / 40

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

Deliver amino acids to the ribosome

Regulate gene expression

Synthesize proteins

32 / 40

What type of bond holds complementary DNA base pairs together?

Ionic bonds

Covalent bonds

Hydrogen bonds

33 / 40

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

Polymorphism

Degeneracy

Redundancy

34 / 40

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

DNA replication

Gene silencing

Protein synthesis

35 / 40

What is the function of reverse transcriptase in retroviruses?

Transcribes mRNA

Converts RNA to DNA

Converts DNA to RNA

36 / 40

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

mRNA

rRNA

tRNA

37 / 40

What is the central dogma of molecular biology?

Protein -> RNA -> DNA

DNA -> RNA -> protein

RNA -> DNA -> protein

38 / 40

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

Binding site for RNA polymerase

Removes introns

Initiates translation

39 / 40

What is the function of RNA polymerase in transcription?

Translates mRNA

Replicates DNA

Synthesizes RNA from DNA template

40 / 40

What is the function of chaperone proteins in molecular biology?

Assist protein folding

Transcribe RNA

Degrade proteins

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admin4 weeks ago

0 3 1 minute read