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Related Practice Questions :

Which of the following has ATPase activity?

1. Actin                            2. Tropomyosin

3. Head of myosin             4. Troponin

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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
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The globular head of the myosin filament has active site/s for binding to:

 I. ATP

II. binding site for actin filament 

III. Calcium

1. Only I

2. Only I and II

3. Only II and III

4. I, II and III

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NEET 2023 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
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The contractile protein of skeletal muscle involving ATPase activity is :

1. tropomyosin                 

2. myosin       

3. α-actinin                     

4. troponin

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NEET 2023 - Target Batch - Aryan Raj Singh
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Skeletal muscles appear striated due to presence of two characteristic protiens in alternating dark and light bands. Which of the following is a correct match of the protien with its light refractive property and colour?

 

       Protien                  Colour                 Property

(1)  Myosin                   Light                 Anisotropic

(2)  Actin                      Dark                 Anisotropic

(3)  Myosin                   Dark                  Isotropic

(4)  Actin                      Light                  Isotropic

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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
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The functions of tropomyosin in skeletal muscle include:
(1) Sliding on actin to produce shortening

(2) Release Ca+2 after initiation of contraction

(3) Acting as "relaxing protein" at rest by covering up the sites where myosin binds to actin

(4) Generates ATP

To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
Please attempt this question first.