MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 21 Mcqs, each offering curated multiple-choice questions to sharpen your Microbiology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Protozoa have several types of vacuoles.The function of a contractile vacuole is to |
| A. | maintain osmotic balance by continuous water expulsion |
| B. | creates sites of food digestion |
| C. | contain specific enzymes that perform various functions |
| D. | have sites for photosynthesis |
| Answer» B. creates sites of food digestion | |
| 2. |
Which of the following is least likely to get in or on a protozoan such as a diplomonad or trichomonad? |
| A. | Flagella |
| B. | More than one nucleus |
| C. | Genes to produce a cyst form |
| D. | Rigid polysaccharide cell wall |
| Answer» E. | |
| 3. |
Members of which phylum of Protozoa are being considered as biological control agents for certain insects? |
| A. | Microspora |
| B. | Sarcomastigophora |
| C. | Apicomplexa |
| D. | all of these |
| Answer» B. Sarcomastigophora | |
| 4. |
Protozoa are generally not |
| A. | multicellular |
| B. | microscopic |
| C. | lacking cell walls |
| D. | eukaryotic |
| Answer» B. microscopic | |
| 5. |
Number of motility structures on flagellated cells is |
| A. | greater than ciliated cells |
| B. | lesser than ciliated cells |
| C. | equal to ciliated cells |
| D. | none of these |
| Answer» C. equal to ciliated cells | |
| 6. |
Members of the Protozoa may motile by all of the following methods except |
| A. | flagella |
| B. | gliding by slime secretion |
| C. | cilia |
| D. | pseudopodia |
| Answer» C. cilia | |
| 7. |
Most commonly asexual reproduction in the Protozoa is by |
| A. | conjugation |
| B. | gametangial contact |
| C. | binary fission |
| D. | binary fusion |
| Answer» D. binary fusion | |
| 8. |
Which of the following describes the function of a phagocytic vacuole? |
| A. | Contain specific enzymes that perform various functions |
| B. | Maintain osmotic balance by continuous water expulsion |
| C. | Structures that accept male gametes during sexual reproduction |
| D. | Sites of food digestion |
| Answer» E. | |
| 9. |
Organisms which have spore-forming stage in their life cycle and lack special locomotory organelles belong to which phylum of Protozoa? |
| A. | Microspora |
| B. | Myxozoa |
| C. | Ciliophora |
| D. | Apicomplexa |
| Answer» E. | |
| 10. |
Which of the following describes the function of a secretory vacuole? |
| A. | Sites of food digestion |
| B. | Maintain osmotic balance by continuous water expulsion |
| C. | Contain specific enzymes that perform various functions |
| D. | Structures that accept male gametes during sexual reproduction |
| Answer» D. Structures that accept male gametes during sexual reproduction | |
| 11. |
Saprozoic nutrition is characterized by |
| A. | phagocytosis of solid nutrients and subsequent formation of phagocytic vacuoles |
| B. | pinocytosis of solid nutrients and subsequent formation of phagocytic vacuoles |
| C. | encystment of solid nutrients and subsequent formation of secretory vacuoles |
| D. | pinocytosis of soluble nutrients and subsequent formation of phagocytic vacuoles |
| Answer» E. | |
| 12. |
Which of the following is least likely to have a rigid cell wall? |
| A. | Bacterium |
| B. | Archaean |
| C. | Fungus |
| D. | Protozoan |
| Answer» E. | |
| 13. |
The numbers of nuclear divisions involved in a ciliate undergoing binary fission is |
| A. | greater than conjugation |
| B. | lesser than conjugation |
| C. | equal to conjugation |
| D. | none of these |
| Answer» C. equal to conjugation | |
| 14. |
Holozoic nutrition is characterized by |
| A. | phagocytosis of solid nutrients and subsequent formation of phagocytic vacuoles |
| B. | pinocytosis of solid nutrients and subsequent formation of phagocytic vacuoles |
| C. | phagocytosis of soluble nutrients and subsequent formation of phagocytic vacuoles |
| D. | photosynthesis |
| Answer» B. pinocytosis of solid nutrients and subsequent formation of phagocytic vacuoles | |
| 15. |
Organisms with amoeboid cells that move within a network of mucous tracks using a typical gliding motion belong to which phylum of Protozoa? |
| A. | Labyinthomorpha |
| B. | Microspora |
| C. | Apicomplexa |
| D. | Myxozoa |
| Answer» B. Microspora | |
| 16. |
Which of the following is not true of protozoa? |
| A. | Lack cell wall |
| B. | Produce no sporebearing structures |
| C. | Comprise the microbial population known as phytoplankton |
| D. | Form active feeding forms called trophozoites |
| Answer» D. Form active feeding forms called trophozoites | |
| 17. |
Sexual reproduction in the Protozoa occurs most commonly by |
| A. | conjugation |
| B. | gametangial contact |
| C. | binary fission |
| D. | binary fusion |
| Answer» B. gametangial contact | |
| 18. |
Organisms with complex life cycles which include a mammalian host and an insect host and involves schizogony as part of the cycle belong to which phylum of Protozoa? |
| A. | Sarcomastigophora |
| B. | Microspora |
| C. | Apicomplexa |
| D. | Myxozoa |
| Answer» D. Myxozoa | |
| 19. |
A protozoan is defined as |
| A. | motile prokaryotic unicellular protist |
| B. | motile eukaryotic unicellular protist |
| C. | motile eukaryotic unicellular photosynthetic protist |
| D. | motile eukaryotic multicellular protist |
| Answer» D. motile eukaryotic multicellular protist | |
| 20. |
Which of the following is not a function of cysts for Protozoa? |
| A. | Protect against adverse environments |
| B. | Sites for nuclear reorganization and cell division |
| C. | Serve as a means of transfer between hosts in parasitic species |
| D. | All of the above |
| Answer» E. | |
| 21. |
Organisms are parasitic and have a resistant spore with one to six coiled polar filaments belong to which phylum of Protozoa? |
| A. | Labyinthomorpha |
| B. | Sarcomastigophora |
| C. | Apicomplexa |
| D. | Myxozoa |
| Answer» E. | |