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Q. No.The structure of collagen, discovered by G. N. Ramachandran, is described as:
1. A left-handed alpha helix
2. A beta pleated sheet
3. A double helix
4. A triple helix
1. A left-handed alpha helix
2. A beta pleated sheet
3. A double helix
4. A triple helix
Subtopic: Â Introduction to Cell |
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From NCERT
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Given below are two statements:
| Assertion (A): | It is important that the organisms should have cells. |
| Reason (R): | A cell keeps its chemical composition steady within its boundary. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Â Introduction to Cell |
From NCERT
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Q. No.
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