Write the difference between (Any two):
$(a)$ Actin and Myosin
$(b)$ Red and White muscle fibres
$(c)$ Pectoral and Pelvic girdle
$(a)$ Actin and Myosin
$(b)$ Red and White muscle fibres
$(c)$ Pectoral and Pelvic girdle
(N/A) Actin and Myosin
$(b)$ Red and White muscle fibres
$(c)$ Pectoral and Pelvic girdle
| Actin | Myosin |
|---|---|
| $(1)$ Actin is a thin contractile protein. | $(1)$ Myosin is a thick contractile protein. |
| $(2)$ It is present in light bands and is called an isotropic band. | $(2)$ It is present in dark bands and is called an anisotropic band. |
$(b)$ Red and White muscle fibres
| Red muscle fibres | White muscle fibres |
|---|---|
| $(1)$ These are thin and smaller in size. | $(1)$ These are thick and larger in size. |
| $(2)$ They are red in colour due to high myoglobin content. | $(2)$ They are white in colour due to low myoglobin content. |
| $(3)$ They contain numerous mitochondria. | $(3)$ They contain fewer mitochondria. |
| $(4)$ They perform slow and sustained contractions for a long period. | $(4)$ They perform fast work for a short duration. |
| $(5)$ They generate energy primarily by aerobic respiration. | $(5)$ They generate energy primarily by anaerobic respiration. |
$(c)$ Pectoral and Pelvic girdle
| Pectoral girdle | Pelvic girdle |
|---|---|
| $(1)$ It provides skeletal support for the attachment of forelimbs. | $(1)$ It provides skeletal support for the attachment of hind limbs. |
| $(2)$ It consists of two bones: the clavicle and the scapula. | $(2)$ It consists of three fused bones: the ilium,ischium,and pubis. |
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