Which of the following movements can be seen in a human body?

I. Amoeboid II. Ciliary III. Flagellar
 
1. I and II only 2. I and III only
3. II and III only 4. I, II and III
Subtopic:  Introduction to Locomotion |
 74%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


ATPase activity is found in:

1. Myosin head 2. Myosin tail
3. G-Actin 4. Troponin
Subtopic:  Energy for Muscle Contraction |
 94%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


Skeletal muscles are:
1. Striated, Multinucleate and Voluntary
2. Non-Striated, Multinucleate and Voluntary
3. Striated, Multinucleate and Involuntary
4. Non-Striated, Uni-nucleate and Voluntary

Subtopic:  Skeletal Muscle: Basic Anatomy |
 92%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


With respect to the red muscle fibers [Type I], the white muscle fibers [Type II] are richer in:

1. Blood capillaries 2. Myoglobin
3. Sarcoplasmic reticulum 4. Mitochondria
Subtopic:  Muscle Contraction: Other Considerations |
 83%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


The smallest, functional unit of contraction is the:

1. muscle fiber 2. sarcomere
3. myofilament 4. myofibril
Subtopic:  Skeletal Muscle: Basic Anatomy |
 87%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


A motor neuron along with all the muscle fibers innervated by it constitute a:

1. Fascicle 2. Motor end plate
3. Motor unit 4. Myoneural junction
Subtopic:  Skeletal Muscle: Basic Anatomy | Skeletal Muscle: Myofilaments |
 67%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


During muscle contraction, the part that does not get shortened in length is labeled as the letter:

1. A 2. B
3. C 4. D
Subtopic:  Excitation Contraction Coupling I | Excitation Contraction Coupling II |
 69%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


Consider the following statements:
I. The head of myosin is made of LMM and the tail is made of HMM
II. F Actin is monomeric while G actin is polymeric
III. Tropomyosin is composed of three globular proteins

The incorrect statements are:

1. I and II only 2. I and III only
3. II and III only 4. I, II and III
Subtopic:  Skeletal Muscle: Myofilaments |
 62%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


Select the correct match for the parts labeled as A, B, C and D in the given diagram of a sarcomere:
 
A B C D
1. I band A band H zone M line
2. I band H zone M line Z line
3. A band I band Z line M line
4. H zone I band M line Z line

Subtopic:  Skeletal Muscle: Sarcomere |
 88%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


As the distance from Z line to Z line decreases, which bands shorten in a sarcomere?

1. the I band and H band 2. the I band and A band
3. the A band and H band 4. all bands shorten
Subtopic:  Sliding Filament Theory |
 89%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.