MCQOPTIONS
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MCQOPTIONS
This section includes 66 Mcqs, each offering curated multiple-choice questions to sharpen your Cell Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Cadherins are 720-750 amino acids long. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 2. |
In an immunoglobulin, the heavy chains and the light chains are held together by ____________ |
| A. | Diphosphate bond |
| B. | Dichloride bond |
| C. | Disulphide bond |
| D. | Dihydroxide bond |
| Answer» D. Dihydroxide bond | |
| 3. |
Which of the following immunoglobulin is naturally given to the fetus? |
| A. | IgG |
| B. | IgM |
| C. | IgD |
| D. | IgE |
| Answer» B. IgM | |
| 4. |
Gap junctions are otherwise known as plasmodesmata. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 5. |
Who coined the term desmosomes? |
| A. | Edward Jenner |
| B. | Robert Koch |
| C. | Josef Schaffer |
| D. | Giulio Bizzozero |
| Answer» D. Giulio Bizzozero | |
| 6. |
Which of the following has abundant protocadherins? |
| A. | Circulatory system |
| B. | Reproductive system |
| C. | Nervous system |
| D. | Coordination system |
| Answer» D. Coordination system | |
| 7. |
The movement of cell with respect to rigidity is called durotaxis. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 8. |
Which of the following is the continuous channel formed by the cell membranes? |
| A. | Desmosomes |
| B. | Peroxisomes |
| C. | Annular Shell |
| D. | Integrins |
| Answer» D. Integrins | |
| 9. |
Tight junctions are made up of single junctions in our body. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 10. |
Gap junctions are absent in __________ |
| A. | Sperm cells |
| B. | Reproductive cells |
| C. | Cardiac cells |
| D. | Brain cells |
| Answer» B. Reproductive cells | |
| 11. |
Which of the following disease is caused by the mutation of desmosomes? |
| A. | Parkinson’s disease |
| B. | Down’s syndrome |
| C. | Cardiomyopathy |
| D. | Bubble Boy Syndrome |
| Answer» D. Bubble Boy Syndrome | |
| 12. |
Which of the following is defined by the tight junctions? |
| A. | Efficiency of drugs |
| B. | Diffusion of drugs |
| C. | Breakdown of drugs |
| D. | Absorption of drugs |
| Answer» C. Breakdown of drugs | |
| 13. |
Which of the following protein is present in large amount in tight junctions? |
| A. | Albumin |
| B. | Globulin |
| C. | Claudin |
| D. | Elastin |
| Answer» D. Elastin | |
| 14. |
Which of the following disease associated with the nervous system is caused by disorder in gap junctions? |
| A. | Parkinson’s disease |
| B. | Brain ischemia |
| C. | Stroke |
| D. | Seizures |
| Answer» C. Stroke | |
| 15. |
Bacteria can be divided into classes namely gram-positive bacteria and gram-negative bacteria based on their cell wall. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 16. |
Leaky epithelium is present in bile ducts. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 17. |
What is the diameter of a gap junction? |
| A. | 2.2 – 3 nm |
| B. | 3 – 3.2 nm |
| C. | 1.2 – 2 nm |
| D. | 0.2 – 2 nm |
| Answer» D. 0.2 – 2 nm | |
| 18. |
How many amino acids does the plakoglobin has? |
| A. | 735 |
| B. | 740 |
| C. | 745 |
| D. | 750 |
| Answer» D. 750 | |
| 19. |
Who discovered plasmodesmata? |
| A. | Strasburger |
| B. | Boveri |
| C. | J Rhodin |
| D. | Van Beneden |
| Answer» B. Boveri | |
| 20. |
Which genetic disorder is associated with dysfunction of gap junction? |
| A. | Vohwinkel’s syndrome |
| B. | Down’s syndrome |
| C. | Zellweger Syndrome |
| D. | Bubble Boy Syndrome |
| Answer» B. Down’s syndrome | |
| 21. |
Where is the CDH3 gene expressed? |
| A. | Bone marrow |
| B. | Lymph nodes |
| C. | Neurons |
| D. | Placenta |
| Answer» E. | |
| 22. |
What ions is required for the function of cadherins? |
| A. | Ca²⁺ |
| B. | Na⁺ |
| C. | K⁺ |
| D. | H⁺ |
| Answer» B. Na⁺ | |
| 23. |
What is the gap junction in nerves called? |
| A. | Chemical synapse |
| B. | Electrical synapse |
| C. | Post synapse |
| D. | Pre synapse |
| Answer» C. Post synapse | |
| 24. |
Which of the following is used by cells to interact with other cells? |
| A. | Cell junctions |
| B. | Cell adhesions |
| C. | Cell detectors |
| D. | Cell tubules |
| Answer» B. Cell adhesions | |
| 25. |
How many plasmodesmata are present in a plant cell? |
| A. | 10 |
| B. | 100 |
| C. | 1000 |
| D. | 5 |
| Answer» D. 5 | |
| 26. |
Who discovered cell wall? |
| A. | Karl Rudolphi |
| B. | Boveri |
| C. | J Rhodin |
| D. | Van Beneden |
| Answer» B. Boveri | |
| 27. |
What is present in the cell wall of Mycobacterium tuberculosis? |
| A. | Cellulose |
| B. | Nitric acid |
| C. | Acetone |
| D. | Mycolic acid |
| Answer» E. | |
| 28. |
Which of the following antibiotics have their mode of action of inhibition of cell wall synthesis? |
| A. | Nalidixic acid |
| B. | Ciprofloxacin |
| C. | β-lactams |
| D. | Norfloxacin |
| Answer» D. Norfloxacin | |
| 29. |
Which tissues in our body contains abundant desmosomes? |
| A. | Liver tissues |
| B. | Muscles |
| C. | Cardiac tissues |
| D. | Nervous tissues |
| Answer» D. Nervous tissues | |
| 30. |
Which cell organelle covers the plasmodesmata of the cells? |
| A. | Ribosome |
| B. | Nucleus |
| C. | Rough endoplasmic Reticulum |
| D. | Smooth endoplasmic reticulum |
| Answer» E. | |
| 31. |
Which of the following contains tight junctions? |
| A. | Chordates |
| B. | Arthropods |
| C. | Nematodes |
| D. | Molluscs |
| Answer» B. Arthropods | |
| 32. |
What is S- layer? |
| A. | Solid layer |
| B. | Surface layer |
| C. | Secondary layer |
| D. | Soluble layer |
| Answer» C. Secondary layer | |
| 33. |
Who discovered desmosomes? |
| A. | Giulio Bizzozero |
| B. | Boveri |
| C. | J Rhodin |
| D. | Van Beneden |
| Answer» B. Boveri | |
| 34. |
What is the use of matrix-bound nanovesicles? |
| A. | Enzyme technology |
| B. | Tissue engineering |
| C. | Biofuel production |
| D. | Pharma product production |
| Answer» C. Biofuel production | |
| 35. |
What is epithelial mesenchymal transistion? |
| A. | Loss of adhesion and gain of migration |
| B. | Loss of migration and gain of adhesion |
| C. | Lysis of cell |
| D. | Formation of mesenchymal cells |
| Answer» B. Loss of migration and gain of adhesion | |
| 36. |
Which of the following filaments bind to the cadherin and catenin complex? |
| A. | Myosin |
| B. | Actin |
| C. | Globulin |
| D. | Albumin |
| Answer» C. Globulin | |
| 37. |
What is the radius of the tight junctions? |
| A. | 3 Å |
| B. | 4 Å |
| C. | 5 Å |
| D. | 6 Å |
| Answer» C. 5 Å | |
| 38. |
What organism lacks cell wall? |
| A. | Plant cells |
| B. | Protozoa |
| C. | Bacterial cells |
| D. | Algae |
| Answer» C. Bacterial cells | |
| 39. |
What is the range of amino acids present in an immunoglobulin molecule? |
| A. | 50-110 |
| B. | 70-110 |
| C. | 60-10 |
| D. | 80-110 |
| Answer» C. 60-10 | |
| 40. |
What is the name of the interaction made by the immune system? |
| A. | Permanent |
| B. | Transient |
| C. | Active |
| D. | Passive |
| Answer» C. Active | |
| 41. |
What is the size range of adheren junctions? |
| A. | 20-100 nm |
| B. | 30-100 nm |
| C. | 40-100 nm |
| D. | 50-100nm |
| Answer» C. 40-100 nm | |
| 42. |
Which genetic disorder is associated with accumulation of proteoglycans? |
| A. | Polysaccharidoses |
| B. | Mucomonosaccharidoses |
| C. | Mucopolysaccharidoses |
| D. | Monosaccharidoses |
| Answer» D. Monosaccharidoses | |
| 43. |
What is the chemical formula for rotigaptide? |
| A. | C₂₈H₃₉N₇O₉ |
| B. | C₂₈H₃₉N₇O₈ |
| C. | C₂₈H₃₈N₇O₉ |
| D. | C₂₇H₃₉N₇O₉ |
| Answer» B. C₂₈H₃₉N₇O₈ | |
| 44. |
Which of the following bacteria lacks cell wall? |
| A. | Mycoplasma pneumoniae |
| B. | Bacillus subtilis |
| C. | Staphylococcus aureus |
| D. | Helicobacter pylori |
| Answer» B. Bacillus subtilis | |
| 45. |
The cell wall of diatoms composed of __________ |
| A. | Biogenic alumina |
| B. | Biogenic ammonia |
| C. | Biogenic silica |
| D. | Biogenic magnesia |
| Answer» D. Biogenic magnesia | |
| 46. |
Which of the following is a signaling molecule for bacteria? |
| A. | Heteroserine lactones |
| B. | Polyserine lactones |
| C. | Monoserine lactones |
| D. | Homoserine lactones |
| Answer» E. | |
| 47. |
Which of the following is caused by cadherin disorder? |
| A. | Zellweger syndrome |
| B. | Usher syndrome |
| C. | Bubble boy syndrome |
| D. | Down’s syndrome |
| Answer» C. Bubble boy syndrome | |
| 48. |
Hemidesmosomes are present in keratinocytes. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 49. |
Which of the following disease is associated with desmoplakin disorder? |
| A. | Alzheimer |
| B. | Carvajal syndrome |
| C. | Myocardial infarction |
| D. | Zellweger syndrome |
| Answer» C. Myocardial infarction | |
| 50. |
Bacteria uses glycoproteins and glycolipids to attach itself to the host cell. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |