MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of these structures are present on the retina? |
| A. | Macula lutea |
| B. | Macula densa |
| C. | Macula adherens |
| D. | Macula flava |
| Answer» B. Macula densa | |
| 2. |
Which of these does not take place when light falls on the photopigments of the eye? |
| A. | Opsin undergoes conformational changes |
| B. | Action potentials are generated in the ganglion cells |
| C. | Retinal and opsin bind together |
| D. | Potential differences are generated in the photoreceptor cells |
| Answer» D. Potential differences are generated in the photoreceptor cells | |
| 3. |
In which of these structures is visual acuity the greatest? |
| A. | Lens |
| B. | Blind spot |
| C. | Fovea |
| D. | Cornea |
| Answer» D. Cornea | |
| 4. |
Which of these is not a protein? |
| A. | Iodopsin |
| B. | Rhodopsin |
| C. | Opsin |
| D. | Retinal |
| Answer» E. | |
| 5. |
The space between the cornea and the lens is called the vitreous chamber. True or false? |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
In which of these structures are cone cells densely packed? |
| A. | Choroid |
| B. | Blind spot |
| C. | Fovea |
| D. | Cornea |
| Answer» D. Cornea | |
| 7. |
What is the point of exit of optic nerves and entry of blood vessels in the eye? |
| A. | Choroid |
| B. | Fovea |
| C. | Macula lutea |
| D. | Blind spot |
| Answer» E. | |
| 8. |
The sensation of what color is produced when all cones are stimulated equally? |
| A. | White |
| B. | Black |
| C. | Yellow |
| D. | Purple |
| Answer» B. Black | |
| 9. |
To which of these colors are the cone cells of the eye unresponsive? |
| A. | Red |
| B. | Blue |
| C. | Yellow |
| D. | Green |
| Answer» D. Green | |
| 10. |
Which of these statements is false regarding photopigments of the eye? |
| A. | Scotopic vision is a function of rods |
| B. | Visual purple is a derivative of rhodopsin |
| C. | They are light sensitive proteins |
| D. | There are three types of cones |
| Answer» C. They are light sensitive proteins | |
| 11. |
Which of these cells are not present on the retina? |
| A. | Mast cells |
| B. | Photoreceptor cells |
| C. | Ganglion cells |
| D. | Bipolar cells |
| Answer» B. Photoreceptor cells | |
| 12. |
Which of these is surrounded by the iris? |
| A. | Cornea |
| B. | Sclera |
| C. | Pupil |
| D. | Lens |
| Answer» D. Lens | |
| 13. |
Which of these structures hold the lens in place? |
| A. | Cartilage |
| B. | Tendons |
| C. | Ligaments |
| D. | Adherens junctions |
| Answer» D. Adherens junctions | |
| 14. |
What is the inner layer of the eye known as? |
| A. | Sclera |
| B. | Cornea |
| C. | Choroid |
| D. | Retina |
| Answer» E. | |