MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Protein Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Extrinsic proteins are held tightly to the lipid bilayer. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
Which of the following is not a multi-pass transmembrane protein? |
| A. | Glucose permease |
| B. | GPCR |
| C. | Rhodopsin |
| D. | Glycophorin |
| Answer» E. | |
| 3. |
Which was the first transmembrane protein for which the complete amino acid sequence was determined? |
| A. | ATPase |
| B. | GPCR |
| C. | Rhodopsin |
| D. | Glycophorin |
| Answer» E. | |
| 4. |
The interior of beta-barrels in porins is hydrophilic. |
| A. | False |
| B. | True |
| Answer» C. | |
| 5. |
The alpha-helices of transmembrane proteins are composed entirely of hydrophobic amino acid residues. |
| A. | False |
| B. | True |
| Answer» C. | |
| 6. |
Which of the following type of proteins are not released from the membrane by relatively gentle extraction procedures, such as exposure to solutions of very high or low ionic strength or of extreme pH? |
| A. | Peripheral proteins |
| B. | Lipid-anchored proteins |
| C. | Extrinsic proteins |
| D. | Intrinsic proteins |
| Answer» E. | |
| 7. |
Which of the following proteins do not have alpha-helix in their transmembrane portion? |
| A. | Rhodopsin |
| B. | GPCRs |
| C. | Glycophorins |
| D. | Porins |
| Answer» E. | |
| 8. |
Which of the following is a single-pass transmembrane protein? |
| A. | Carbonate-bicarbonate exchanger |
| B. | Glucose permease |
| C. | GPCR |
| D. | Glycophorin |
| Answer» E. | |
| 9. |
The hydrophobic helix is prevented from slipping across the membrane by flanking a set of which amino acids? |
| A. | Serine and methionine |
| B. | Glycine and valine |
| C. | Alanine and tyrosine |
| D. | Lysine and arginine |
| Answer» E. | |
| 10. |
Which of the following is an example of integral membrane proteins? |
| A. | Spectrin |
| B. | Actin |
| C. | G proteins |
| D. | GPCRs |
| Answer» E. | |
| 11. |
Transmembrane proteins belong to which class of proteins? |
| A. | Peripheral proteins |
| B. | Lipid-anchored proteins |
| C. | Extrinsic proteins |
| D. | Integral membrane proteins |
| Answer» E. | |
| 12. |
Which of the following type of protein is shown in the figure below? |
| A. | Polytopic transmembrane proteins |
| B. | Lipid-anchored proteins |
| C. | Peripheral proteins |
| D. | Monotopic transmembrane proteins |
| Answer» E. | |
| 13. |
Which of the following protein is also known as intrinsic proteins? |
| A. | Peripheral proteins |
| B. | Lipid-anchored proteins |
| C. | Intracytoplasmic proteins |
| D. | Integral membrane proteins |
| Answer» E. | |