| Statement A: | Skeletal muscle fiber is a syncytium. |
| Statement B: | Intercalated disc is a feature very frequently found in smooth muscles. |
Consider the given three statements:
| Statement I: | The first seven pairs of human ribs are vertebrosternal or true ribs. |
| Statement II: | The 8th, 9th, and 10th pairs of human ribs are vertebrochondral or false ribs. |
| Statement III: | The 11th and the 12th pair of human ribs are called the floating ribs. |
1. None of the statements are correct.
2. Only one of the statement is correct.
3. Two of the statements are correct.
4. All three statements are correct.
| Column A | Column B | ||
| A | Hinge Joint | P | Thumb Joint |
| B | Ball and Socket Joint | Q | Elbow |
| C | Pivot Joint | R | Neck (between the first and second cervical vertebrae) |
| D | Saddle Joint | S | Hip |
| A | B | C | D | |
| 1. | Q | S | P | R |
| 2. | Q | S | R | P |
| 3. | S | Q | P | R |
| 4. | S | Q | R | P |
| 1. | Myosin head hydrolyzes ATP, attaches to actin, performs a power stroke, and releases ADP. |
| 2. | Myosin head binds to ATP, detaches from actin, hydrolyzes ATP, and reattaches to actin. |
| 3. | Myosin head releases ADP, binds to ATP, detaches from actin, and hydrolyzes ATP. |
| 4. | Myosin head attaches to actin, performs a power stroke, binds ATP, and then detaches from actin. |
| I: | number of mitochondria |
| II: | number of blood capillaries |
| III: | myoglobin content |
| 1. | Pivot | 2. | Gliding |
| 3. | Saddle | 4. | Ball and socket |
| Assertion (A): | Post menopausal women have an increased risk of fractures on fall. |
| Reason (R): | Age related osteoporosis is common in post-menopausal women. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
| Statement I: | Each ‘G’ [globular] actin is a polymer of monomeric ‘F’ actins. |
| Statement II: | The globular head is an active ATPase enzyme and has binding sites for ATP and active sites for actin. |
| 1. | saddle joint | 2. | pivot joint |
| 3. | hinge joint | 4. | condyloid joint |