Chromosome and DNA MCQs with Answers

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

Chromosome and DNA Online Quiz

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Test Name: Chromosome and DNA MCQ Quiz Practice
Type: Quiz Test
Total Questions: 40
Total Marks: 40
Time: 40 minutes

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Chromosome and DNA

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1 / 40

Which type of RNA carries the genetic information from DNA to the ribosome?

mRNA

rRNA

tRNA

2 / 40

What is the complementary base pair for cytosine in DNA?

Guanine

Adenine

Thymine

3 / 40

What is the hereditary material found in all living organisms?

RNA

Protein

DNA

4 / 40

In eukaryotic cells, where is DNA primarily found?

Mitochondria

Nucleus

Cytoplasm

5 / 40

What is the name of the enzyme that proofreads and repairs mistakes during DNA replication?

DNA polymerase

Helicase

RNA polymerase

6 / 40

What is the name of the enzyme responsible for joining Okazaki fragments during DNA replication?

DNA polymerase

Helicase

DNA ligase

7 / 40

What is the term for a change in the sequence of nucleotides in DNA?

Mutation

Translation

Transcription

8 / 40

In eukaryotic cells, which organelle is responsible for protein synthesis?

Ribosome

Golgi apparatus

Nucleus

9 / 40

What is the role of ribosomes in protein synthesis?

Site of protein synthesis

Transcribes DNA

Synthesizes RNA

10 / 40

What is the term for the specific region of a chromosome where a gene is located?

Locus

Phenotype

Allele

11 / 40

What is the term for the sequence of three nucleotides on tRNA that pairs with the codon on mRNA?

Codon

Gene

Anticodon

12 / 40

What is the term for the specific sequence of nucleotides that codes for a particular protein?

Allele

Gene

Chromosome

13 / 40

What is the process of synthesizing RNA from a DNA template called?

Translation

Replication

Transcription

14 / 40

Which enzyme adds new nucleotides to the growing DNA strand during replication?

RNA polymerase

Helicase

DNA polymerase

15 / 40

What is the term for the specific sequence of nucleotides that signals the start of translation?

Stop codon

Anticodon

Start codon

16 / 40

What is the process by which RNA is synthesized from a DNA template called?

Replication

Transcription

Translation

17 / 40

What is the structure of DNA described as when it consists of two strands twisted around each other?

Triple helix

Double helix

Single strand

18 / 40

What is the sugar component of DNA?

Glucose

Ribose

Deoxyribose

19 / 40

What is the primary function of DNA?

Regulate cell functions

Produce proteins

Store genetic information

20 / 40

What is the function of rRNA during protein synthesis?

Carries amino acids to the ribosome

Forms the structure of ribosomes

Synthesizes RNA

21 / 40

Which enzyme is responsible for unwinding and separating the DNA strands during replication?

Helicase

Ligase

Polymerase

22 / 40

What is the function of RNA polymerase during transcription?

Synthesizes RNA

Unwinds DNA strands

Adds nucleotides

23 / 40

Which nitrogenous base is not found in RNA?

Thymine

Uracil

Adenine

24 / 40

What is the term for the process of copying genetic information from DNA to RNA?

Transcription

Replication

Translation

25 / 40

Which nitrogenous base is found in RNA but not in DNA?

Uracil

Thymine

Cytosine

26 / 40

What is the term for the structure composed of DNA and proteins found in the nucleus of eukaryotic cells?

Chromosome

Gene

Nucleotide

27 / 40

Which type of RNA carries amino acids to the ribosome during protein synthesis?

tRNA

rRNA

mRNA

28 / 40

What is the name of the enzyme responsible for adding nucleotides to the growing RNA strand during transcription?

RNA polymerase

DNA polymerase

Helicase

29 / 40

What is the name of the process by which DNA is copied to produce identical daughter molecules?

Transcription

DNA replication

Translation

30 / 40

What is the term for the three-nucleotide sequence on mRNA that codes for a specific amino acid?

Codon

Gene

Anticodon

31 / 40

Which nitrogenous base pairs with guanine in DNA?

Cytosine

Thymine

Uracil

32 / 40

How many chromosomes are found in a human somatic cell?

33 / 40

What is the role of mRNA in protein synthesis?

Carries genetic information from DNA to the ribosome

Carries amino acids to the ribosome

Forms peptide bonds between amino acids

34 / 40

In eukaryotic cells, where does translation occur?

Ribosome

Nucleus

Mitochondria

35 / 40

What is the complementary base pair for adenine in RNA?

Cytosine

Uracil

Thymine

36 / 40

What is the structure of DNA known as when it is tightly coiled around proteins?

Nucleotide

Chromosome

Chromatin

37 / 40

Which nitrogenous base pairs with adenine in RNA?

Uracil

Cytosine

Thymine

38 / 40

What is the function of tRNA during protein synthesis?

Carries amino acids to the ribosome

Carries genetic information from DNA to the ribosome

Forms peptide bonds between amino acids

39 / 40

What is the complementary base pair for adenine in DNA?

Uracil

Thymine

Cytosine

40 / 40

What is the name of the process by which the genetic code carried by mRNA is decoded to produce a specific protein?

Replication

Translation

Transcription

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admin3 weeks ago

0 12 1 minute read