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 central dogma of molecular biology?

DNA -> RNA -> protein

Protein -> RNA -> DNA

RNA -> DNA -> protein

2 / 40

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

Degeneracy

Polymorphism

Redundancy

3 / 40

What is the role of sigma factor in bacterial transcription?

Splices pre-mRNA

Transcribes mRNA

Initiates RNA polymerase binding

4 / 40

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

Removes introns

Initiates translation

Binding site for RNA polymerase

5 / 40

What is the function of RNA polymerase in transcription?

Translates mRNA

Replicates DNA

Synthesizes RNA from DNA template

6 / 40

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

Regulate gene expression

Deliver amino acids to the ribosome

Synthesize proteins

7 / 40

What is the primary function of histones in eukaryotic chromosomes?

Splicing mRNA

Packaging DNA into nucleosomes

Synthesizing RNA

8 / 40

What is the role of spliceosomes in eukaryotic gene expression?

Replicate DNA

Remove introns from pre-mRNA

Transcribe mRNA

9 / 40

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

Transcription initiation site

Ribosome binding site

RNA processing

10 / 40

What is the function of telomerase in eukaryotic cells?

Repair DNA damage

Synthesize RNA

Maintain telomere length

11 / 40

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

Promote transcription

Enhance stability and translation

Remove introns

12 / 40

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

Targeted gene editing

DNA replication

Protein synthesis

13 / 40

What is the function of DNA polymerase in DNA replication?

Translates mRNA

Synthesizes new DNA strand

Transcribes RNA

14 / 40

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

Unwinds DNA strands

Synthesizes new DNA strands

Joins Okazaki fragments

15 / 40

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

mRNA

rRNA

tRNA

16 / 40

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

Cuts DNA at specific sequences

Amplifies DNA fragments

Joins DNA fragments

17 / 40

Which enzyme is responsible for unwinding DNA during replication?

Polymerase

Ligase

Helicase

18 / 40

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

Primase

Ligase

Helicase

19 / 40

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

DNA polymerase III

DNA polymerase I

DNA ligase

20 / 40

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

Transcription

Translation

Replication

21 / 40

Which process involves the copying of DNA into RNA?

Transcription

Translation

Replication

22 / 40

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

Metabolism of lactose

RNA processing

DNA replication

23 / 40

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

Initiates transcription

Terminates transcription

Splices mRNA

24 / 40

What type of bond holds complementary DNA base pairs together?

Hydrogen bonds

Ionic bonds

Covalent bonds

25 / 40

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

Single strand

Double helix

Triple helix

26 / 40

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

Polymerase chain reaction (PCR)

Restriction endonuclease

DNA ligase

27 / 40

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

Restriction enzyme

Ribozyme

Spliceosome

28 / 40

What is the function of chaperone proteins in molecular biology?

Assist protein folding

Degrade proteins

Transcribe RNA

29 / 40

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

Polymerase chain reaction (PCR)

Southern blotting

Gel electrophoresis

30 / 40

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

Ribosome binding site

Transcription initiation site

RNA processing

31 / 40

What is the function of topoisomerase in DNA replication?

Proofreads DNA

Relieves torsional strain

Adds nucleotides

32 / 40

What is the function of reverse transcriptase in retroviruses?

Converts RNA to DNA

Converts DNA to RNA

Transcribes mRNA

33 / 40

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

DNA ligase

DNA polymerase

RNA polymerase

34 / 40

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

Amplifies DNA fragments

Joins DNA fragments

Cuts DNA at specific sites

35 / 40

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

DNA ligase

Helicase

RNA polymerase

36 / 40

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

Helicase

Primase

Ligase

37 / 40

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

RNA

DNA

Protein

38 / 40

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

Encodes genetic information

Forms part of ribosome structure

Carries amino acids

39 / 40

What is the role of sigma factor in bacterial transcription?

Splices pre-mRNA

Transcribes mRNA

Initiates RNA polymerase binding

40 / 40

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

Gene silencing

DNA replication

Protein synthesis

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admin3 weeks ago

0 3 1 minute read