MCQOPTIONS
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MCQOPTIONS
This section includes 31 Mcqs, each offering curated multiple-choice questions to sharpen your Bacteria Morphology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Bacteria having cluster of flagella at both poles of cells are known as? |
| A. | Lophotrichous |
| B. | Peritrichous |
| C. | Amphitrichous |
| D. | Monotrichous |
| Answer» D. Monotrichous | |
| 2. |
Peptidoglycan is made up of __________ |
| A. | N-acetylglucosamine |
| B. | N-acetylmuramic acid |
| C. | N-acetylglucosamine, N-acetylmuramic acid |
| D. | N-acetylglucosamine,N-acetylmuramic acid,amino acids |
| Answer» E. | |
| 3. |
Bacteria with less than a complete twist or comma shaped is known as? |
| A. | spirilla |
| B. | helical |
| C. | vibrioid |
| D. | spirochetes |
| Answer» D. spirochetes | |
| 4. |
Which of the following are functions of stalk? |
| A. | nutrient absorption |
| B. | motility |
| C. | attachment of the cells to surfaces |
| D. | human infection |
| Answer» D. human infection | |
| 5. |
Peptidoglycan layer is present in large quantity in? |
| A. | Gram-positive bacteria |
| B. | Gram-negative bacteria |
| C. | Fungi |
| D. | Algae |
| Answer» B. Gram-negative bacteria | |
| 6. |
Which type of force drives the flagellar motion? |
| A. | Protonmotive force |
| B. | ATP driven |
| C. | Protonmotive and ATP driven |
| D. | No protonmotive nor ATP driven |
| Answer» B. ATP driven | |
| 7. |
When a bacteria swim towards a chemical, it is termed as__________ |
| A. | positive chemotaxis |
| B. | phototaxis |
| C. | negative chemotaxis |
| D. | magnetotaxis |
| Answer» B. phototaxis | |
| 8. |
The capsule of Klebsiella pneumoniae is composed of heteropolysaccharides. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» B. False | |
| 9. |
F pilus has a major role as___________ |
| A. | motility of the cell |
| B. | port of entry of genetic material during mating |
| C. | attachment to host cell |
| D. | human infection |
| Answer» C. attachment to host cell | |
| 10. |
Prosthecae helps in __________ |
| A. | motility |
| B. | nutrient absorption and attachment to surfaces |
| C. | human infection |
| D. | protection from environment |
| Answer» C. human infection | |
| 11. |
The L Ring in a Gram-Negative bacterium flagella is associated with_________ |
| A. | Peptidogycan |
| B. | Outer Membrane |
| C. | Cytoplasmic Membrane |
| D. | Cell Membrane |
| Answer» C. Cytoplasmic Membrane | |
| 12. |
Which among the following acts as a transport protein for protons in flagellar motion? |
| A. | fli protein |
| B. | cGMP |
| C. | atp |
| D. | mot protein |
| Answer» E. | |
| 13. |
Salmonella typhi has which type of flagella arrangement? |
| A. | Amphitrichous |
| B. | Peritrichous |
| C. | Monotrichous |
| D. | Lophotrichous |
| Answer» C. Monotrichous | |
| 14. |
When rod shaped bacteria appears in pairs,it is known as? |
| A. | Diplobacilli |
| B. | Streptobacilli |
| C. | Diplococci |
| D. | Staphylococci |
| Answer» B. Streptobacilli | |
| 15. |
Surface area/volume ratio of bacteria is exceedingly low compared to the same ratio for larger organisms of similar shape. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» C. May be | |
| 16. |
What is the approximate size of the bacterial cell? |
| A. | 2mm in diameter |
| B. | 1mm in diameter |
| C. | 2 micrometer in diameter |
| D. | 0.5 to 1.0 micrometer in diameter |
| Answer» E. | |
| 17. |
Which among the following are Spirochetes ? |
| A. | Spirillum volutans |
| B. | Corynebacterium diphtheriae |
| C. | Streptomyces sp. |
| D. | Treponema pallidum |
| Answer» E. | |
| 18. |
Which group of bacteria among the following have the largest area of contact? |
| A. | Palisades |
| B. | Trichomes |
| C. | Streptobacilli |
| D. | Diplobacilli |
| Answer» C. Streptobacilli | |
| 19. |
Which of the following surrounds plasmalemma? |
| A. | lumen |
| B. | wall |
| C. | protoplasm |
| D. | hyphae |
| Answer» D. hyphae | |
| 20. |
In the classification of bacteria according to shape,which among the following refer to cuboidal arrangement of bacterial cells? |
| A. | Tetrads |
| B. | Staphylococci |
| C. | Sarcinae |
| D. | Streptococci |
| Answer» D. Streptococci | |
| 21. |
Polyisoprenoid branched-chain lipids, are present in which of the following? |
| A. | Archaebacteria |
| B. | Eubacteria |
| C. | Archaebacteria and Eubacteria |
| D. | Cannot be determined |
| Answer» B. Eubacteria | |
| 22. |
Bayer s junctions are sites which help in joining which of the following? |
| A. | cytoplasmic membrane and outer membrane |
| B. | outer membrane and capsule |
| C. | cytoplasmic membrane and periplasmic space |
| D. | peptidoglycan layer and cytoplasmic membrane |
| Answer» B. outer membrane and capsule | |
| 23. |
Gram-negative bacteria are more resistant to antibiotics due to the presence of? |
| A. | Thin peptidoglycan wall |
| B. | Outer lipopolysaccharide layer |
| C. | Porin proteins |
| D. | Teichoic acid |
| Answer» C. Porin proteins | |
| 24. |
Which of the following are present in teichoic acids? |
| A. | ribitol residues |
| B. | glycerol residues |
| C. | glucose residues |
| D. | ribitol or glycerol residues |
| Answer» E. | |
| 25. |
Porins are special proteins act as channels in outer membrane of Gram-negative bacteria. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» B. False | |
| 26. |
NAG and NAM of peptidoglycan layer is linked by _________ |
| A. | beta-(1,4) glycosidic linkage |
| B. | alpha-(1,4) glycosidic linkage |
| C. | alpha-(1,6) glycosidic linkage |
| D. | beta-(1,6) glycosidic linkage |
| Answer» B. alpha-(1,4) glycosidic linkage | |
| 27. |
Which among the following acts as receptors for bacteriophage attachment in Gram-negative bacteria? |
| A. | Cilia |
| B. | O antigens |
| C. | Lipid A |
| D. | |
| Answer» C. Lipid A | |
| 28. |
The outer membarane of the Gram-negative cell wall is anchored to the underlying peptidoglycan by means of which of the following? |
| A. | Braun s Lipoprotein |
| B. | Phospholipids |
| C. | |
| D. | D. |
| Answer» B. Phospholipids | |
| 29. |
Cord factor is a ___________ |
| A. | protein |
| B. | teichoic acid derivative |
| C. | mycolic acid derivative |
| D. | carbohydrate |
| Answer» D. carbohydrate | |
| 30. |
Teichoic acid present in Gram-positive bacteria can bind to which ion? |
| A. | Fe ions |
| B. | Phosphorus ions |
| C. | Mg ions |
| D. | Sulphur ions |
| Answer» D. Sulphur ions | |
| 31. |
Yeasts have flagella for the purpose of locomotion |
| A. | True |
| B. | False |
| Answer» C. | |