MCQOPTIONS
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MCQOPTIONS
This section includes 12 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. |
Lipid rafts are ___________ |
| A. | Patches of glycoproteins in the lipid bilayer |
| B. | Patches of cholesterol and sphingolipids in lipid bilayer |
| C. | Patches of only cholesterol in lipid bilayers |
| D. | Detached patches of proteins floating on the lipid bilayer |
| Answer» C. Patches of only cholesterol in lipid bilayers | |
| 2. |
Carbohydrates present in cell membrane are generally ___________ |
| A. | Monosaccharides |
| B. | Disachharides |
| C. | Oligosaccharides |
| D. | Polysaccharides |
| Answer» D. Polysaccharides | |
| 3. |
Which of the following promote curvature of cell membrane? |
| A. | Phosphatidyl choline (PC) |
| B. | Phosphatidyl serine (PS) |
| C. | Phosphatidyl ethanolamine (PE) |
| D. | Phosphatidyl inositol(PI) |
| Answer» D. Phosphatidyl inositol(PI) | |
| 4. |
Which of the following facilitates binding of positively charged amino acid residues? |
| A. | Phosphatidyl choline (PC) |
| B. | Phosphatidyl serine (PS) |
| C. | Phosphatidyl ethanolamine (PE) |
| D. | Phosphatidyl inositol(PI) |
| Answer» C. Phosphatidyl ethanolamine (PE) | |
| 5. |
Which of the following is exoplasmic? |
| A. | Phosphatidyl choline |
| B. | Phosphatidyl serine |
| C. | Phosphatidyl ethanolamine |
| D. | Phosphatidyl inositol |
| Answer» B. Phosphatidyl serine | |
| 6. |
Which part of cholesterol molecule is not embedded in the lipid bilayer? |
| A. | Hydroxyl end of cholesterol |
| B. | Entire molecule of cholesterol |
| C. | Hydrophobic rings |
| D. | Hydroxyl end and <sup>1</sup> <sub>4</sub>th of the hydrophobic rings |
| Answer» B. Entire molecule of cholesterol | |
| 7. |
In animals, the amount of cholesterol present in cell membrane is ___________ |
| A. | 20% |
| B. | 15% |
| C. | 50% |
| D. | 33.33% |
| Answer» E. | |
| 8. |
Which of the following is not a component of cell membranes? |
| A. | Phosphodiglycerides |
| B. | Sphingolipids |
| C. | Cholesterol |
| D. | Phosphotriglycerides |
| Answer» E. | |
| 9. |
Shingolipids is the derivative of ______________ |
| A. | Sphingosine |
| B. | Shingomycin |
| C. | Sphingoceramicin |
| D. | Sphingolipid polymer |
| Answer» B. Shingomycin | |
| 10. |
The phosphoglycerides in cell membrane are of the _________ type. |
| A. | Triglyceride |
| B. | Diglyceride |
| C. | Monoglyceride |
| D. | Polyglyceride |
| Answer» C. Monoglyceride | |
| 11. |
The model of a lipid bilayer lined by a layer of protein molecules on both sides was put forward by _____ |
| A. | Davson and Danielli |
| B. | Singer and Nicolson |
| C. | Watson and Crick |
| D. | None of the mentioned |
| Answer» B. Singer and Nicolson | |
| 12. |
The lipids present in cell membrane are _____________ |
| A. | Polar |
| B. | Non- polar |
| C. | Charged |
| D. | Ampipathic |
| Answer» E. | |