MCQ
The heart rate of a frog is:
- A25 times/minute
- ✓64 times/minute
- C72 times/minute
- D100 times/minute
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$(a)$ $'H'$ zone disappears
$(b)$ $'A'$ band widens
$(c)$ $'I'$ band reduces in width
$(d)$ Myosine hydrolyzes $ATP,$ releasing the $ADP$ and $\mathrm{Pi}$
$(e)$ $Z-$lines attached to actins are pulled inwards Choose the correct answer from the options given below.
| Column $I$ | Column $II$ |
| $A .$ Hinge | $1.$ Atlas and axis |
| $B.$ Saddle | $2 .$ Frontal and parietal |
| $C .$ Pivot | $3 .$ Carpal and metacarpal of humans |
| $D .$ Ball and socket | $4 .$ Knee |
| $5 .$ Humerus and pectoral girdle |
Codes
$A \quad B \quad C \quad D$