MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Microbiology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The function of ribosomes within the cell is |
| A. | to produce ATP |
| B. | to ferment carbohydrates |
| C. | to synthesize proteins |
| D. | all of these |
| Answer» D. all of these | |
| 2. |
Stem and loop structures are |
| A. | proteins that help partially denatured enzymes to recover their native configuration |
| B. | structures in DNA caused by inverted repeats |
| C. | structures at the ends of linear eukaryotic DNA molecules |
| D. | the bonds between adjacent DNA nucleotides in the same strand |
| Answer» C. structures at the ends of linear eukaryotic DNA molecules | |
| 3. |
According to base pairing rules the bases of one strand match-up with the bases of the second strand of DNA and the two strands are said to be |
| A. | complementary |
| B. | oppositely charged |
| C. | identical |
| D. | none of these |
| Answer» B. oppositely charged | |
| 4. |
RNA that is complementary to a segment of another RNA molecule to which it will bind is known as |
| A. | missense RNA |
| B. | antisense RNA |
| C. | nonsense RNA |
| D. | none of these |
| Answer» C. nonsense RNA | |
| 5. |
The DNA that actually codes for a protein's primary structure in eukaryotes is |
| A. | the entire gene |
| B. | portions of the gene called introns |
| C. | portions of the gene called exons |
| D. | the promoter |
| Answer» D. the promoter | |
| 6. |
The chromosome of almost all bacteria is in the shape of |
| A. | an open circle |
| B. | helix |
| C. | a closed circle |
| D. | a linear chromosome |
| Answer» D. a linear chromosome | |
| 7. |
In which of the following uracil is present? |
| A. | RNA |
| B. | DNA |
| C. | Both (a) and (b) |
| D. | None of these |
| Answer» B. DNA | |
| 8. |
To which of the following adenine always binds? |
| A. | Guanine |
| B. | Cytosine |
| C. | Thymine |
| D. | None of these |
| Answer» D. None of these | |
| 9. |
Guanine always binds to |
| A. | cytosine |
| B. | guanine |
| C. | thymine |
| D. | none of these |
| Answer» B. guanine | |
| 10. |
Which is not an essential part of a two-component phosphorelay system? |
| A. | Response regulator |
| B. | Sensor kinase |
| C. | Autoinducer |
| D. | None of these |
| Answer» D. None of these | |
| 11. |
In DNA sequencing, the primer |
| A. | specifies where the sequence ends |
| B. | specifies where the sequence begins |
| C. | both (a) and (b) |
| D. | generates variety of different sized fragments |
| Answer» C. both (a) and (b) | |