Class 11 Biology - Chapter Locomotion and Movement NCERT Solutions | Write the difference between: (a) Actin
Write the difference between:
(a) Actin and Myosin
(b) Red and White muscles
(c) Pectoral and Pelvic girdle
(a) Actin and Myosin
|
|
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. (I-band) |
2 |
It is present in dark bands and is called an anisotropic band.(A-band) |
(b) Red and White muscles
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|
Red muscle fibre |
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White muscle fibre |
|
1 |
Red muscle fibres are thin and smaller in size. |
1 |
White muscle fibres are thick and larger in size. |
|
2 |
They are red in colour as they contain large amounts of myoglobin. |
2 |
They are white in colour as they contain small amounts of myoglobin |
|
3 |
They contain numerous mitochondria. |
3 |
They contain less number of mitochondria. |
|
4 |
They carry out slow and sustained contractions for a long period. |
4 |
They carry out fast work for short duration. |
|
5 |
They provide energy by aerobic respiration. |
5 |
They provide energy by anaerobic respiration. |
(c) Pectoral and Pelvic girdle
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|
Pectoral girdle |
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Pelvic girdle |
|
1 |
It is a skeletal support from where the forelimbs of vertebrates are attached. |
1 |
It is a skeletal support form where the hind limbs of vertebrates are attached. |
|
2 |
It is composed of two Bones namely, clavicle or collar bones and scapula or shoulder bone. |
2 |
It is composed of three bones, upper ileum, inner pubic, and ischium. |
More Questions From Class 11 Biology - Chapter Locomotion and Movement
- Q:- Name the type of joint between the following:-
(a) atlas/axis
(b) carpal/metacarpal of thumb
(c) between phalanges
(d) femur/acetabulum
(e) between cranial bones
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How do you distinguish between a skeletal muscle and a cardiac muscle?
- Q:- Fill in the blank spaces:
(a) All mammals (except a few) have __________ cervical vertebra.
(b) The number of phalanges in each limb of human is __________
(c) Thin filament of myofibril contains 2 F actins and two other proteins namely __________ and __________.
(d) In a muscle fibre Ca++ is stored in __________
(e) __________ and __________ pairs of ribs are called floating ribs.
(f) The human cranium is made of __________ bones. - Q:-
Draw the diagram of a sarcomere of skeletal muscle showing different regions.
- Q:-
Describe the important steps in muscle contraction.
- Q:-
Define sliding filament theory of muscle contraction.
- Q:- What are the different types of movements exhibited by the cells of human body?
- Q:- Write true or false. If false change the statement so that it is true.
(a) Actin is present in thin filament
(b) H-zone of striated muscle fibre represents both thick and thin filaments.
(c) Human skeleton has 206 bones.
(d) There are 11 pairs of ribs in man.
(e) Sternum is present on the ventral side of the body.
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3 Comment(s) on this Question
Myosin
Bio should be banned!!
Joints
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