MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Biochemistry Advanced knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Oxidation of 3 molecules of glucose by pentose phosphate pathway results in the production of ____________ |
| A. | 3 molecules of pentose, 6 molecules of NADPH and 3 molecules of CO<sub>2</sub> |
| B. | 4 molecules of pentose, 6 molecules of NADPH and 3 molecules of CO<sub>2</sub> |
| C. | 4 molecules of pentose, 3 molecules of NADPH and 3 molecules of CO<sub>2</sub> |
| D. | 3 molecules of pentose, 4 molecules of NADPH and 3 molecules of CO<sub>2</sub> |
| Answer» B. 4 molecules of pentose, 6 molecules of NADPH and 3 molecules of CO<sub>2</sub> | |
| 2. |
Which is the first reaction of the pentose phosphate pathway? |
| A. | Oxidation of glucose 6-phosphate to 6-phosphoglucono- -lactone |
| B. | Oxidation of 6-phosphogluconate to ketopentose ribulose 5-phosphate |
| C. | Reduction of 6-phosphoglucono- -lactone to glucose 6-phosphate |
| D. | Reduction of ketopentose ribulose 5-phosphate to 6-phosphogluconate |
| Answer» B. Oxidation of 6-phosphogluconate to ketopentose ribulose 5-phosphate | |
| 3. |
Which product formed in the isomerization of mannose 6-phosphate? |
| A. | Fructose 6-phosphate |
| B. | Glucose 6-phosphate |
| C. | 2-phosphoglycerate |
| D. | 3-phosphoglycerate |
| Answer» B. Glucose 6-phosphate | |
| 4. |
Site directed mutagenesis facilitated research on ____________ |
| A. | Carbohydrates |
| B. | Proteins |
| C. | Lipids |
| D. | Fats |
| Answer» C. Lipids | |
| 5. |
The binding of ligands to many GPCRs leads to ____________ |
| A. | Decrease in concentration of second messengers |
| B. | Increase in concentration of second messengers |
| C. | Decrease in concentration of first messengers |
| D. | Increase in concentration of first messengers |
| Answer» B. Increase in concentration of second messengers | |
| 6. |
Which of the following glycoprotein functions as a lubricant and protective agent? |
| A. | Collagens |
| B. | Mucins |
| C. | Transferrins |
| D. | Immunoglobulins |
| Answer» C. Transferrins | |