Molecular Biology Mock Test 1

10%

Question 1 of 10

1. Which of the following regarding the basic mechanism of gene expression is correct?

RNA ―> cDNA ―> mRNA ―> protein

RNA ―> DNA ―> mRNA ―> protein

DNA ―> protein

DNA ―> tRNA ―> protein

Question 1 of 10

Question 2 of 10

2. Check which one of the following mechanisms is wrongly paired with its location of occurrence?

Translation – cytoplasm

Post transcriptional mechanism – ER

Transcription – nucleus

Post translational mechanism - ER

Question 2 of 10

Question 3 of 10

3. Histone H1 binds two DNA helices.

True

False

Question 3 of 10

Question 4 of 10

4. Why the variable loop is named so?

Variable number of bases

Variable region

Variability of presence

Multiple loops present

Question 4 of 10

Question 5 of 10

5. Which of the following statement is false about DNA?

Located in chromosomes

Abundantly found in cytoplasm

Carries genetic information from parent to offspring

There is a precise correlation between the amount of DNA and number of sets of chromosome per cell

Question 5 of 10

Question 6 of 10

6. How many channels are present in the ribosome?

Question 6 of 10

Question 7 of 10

7. According to the phenotypic characters of pneumococcus considered in Griffith’s experiment of transformation, which of the following statements are correct?

i) Presence of slime layer
ii) Presence of capsule 
iii) Absence of capsule
iv) Type of adhesion
v) Molecular makeup of capsule

ii, iii, v

ii, iii, iv

i, ii, iii

i, iv, v

Question 7 of 10

Question 8 of 10

8. In early 1950s high quality X-ray diffraction photographs of DNA suggesting the DNA being double helix and composed of two nucleotide strands. Who took those photographs?

Rosalind Franklin

Francis H. Crick and James D. Watson

Rosalind Franklin and Maurice Wilkins

William Asbury

Question 8 of 10

Question 9 of 10

9. DNA always carries the genetic information for all organisms.

False

True

Question 9 of 10

Question 10 of 10

10. An mRNA bearing multiple ribosomes is known as______________

mRNA ribosome complex

Small subunit-mRNA-initiator tRNA complex

Polyamine-ribosome complex

Polysome

Question 10 of 10