Home
Class 11
BIOLOGY
Read the given statements and select the...

Read the given statements and select the correct option.
Statement 1: A primary myofilament is composed of a bundle of rod-like molecules of a protein myosin.
Statement 2: Myosin and actin together a form a contractile apparatus.

A

Both statement 1 and 2 are correct.

B

Statement 1 is correct but statement 2 is incorrect

C

Statement 1 is incorrect but statement 2 is correct.

D

Both statement 1 and 2 are incorrect.

Text Solution

Verified by Experts

The correct Answer is:
A

The primary myofilaments consist mainly of myosin protien. In the presence of `Ca^(2+)` and enerhy from ATP, actin and myosin interact forming actomyosin which causes contraction of muscles.
Promotional Banner

Similar Questions

Explore conceptually related problems

Read the given statements and select the correct option. Statement 1: Herbivours are also called as first order consumers. Statement 2: Herbivores obtain their food directly from plants.

Read the given statements and select the correct option. Statement 1: Net primary productivity is less than the gross primary productivity. Statement 2 : Net primary productivity is equal to the gross primary productivity minus the respiration losses.

Read the following statements select the correct option. Statement 1 : Ranikhet disease is a disease of poultry. Statement 2: It is caused by a virus.

Read the given statement and choose the correct option. Statement 1 : All triploblastic animals are eucoelomates. Statement 2 : They have a false coelom.

Read the given statements and select the correct option. Statement 1: Inflammation of a skeletal joint may immobilise the movements of the joint. Statement 2: This may be caused due to uric acid crystals in the joint cavity and ossification of articular cartilage.

Read the given statements and select the correct option. Statement A : Cattle do not graze on weeds of Calotropis. Statement B : Calotropis have thorns and spines, as defense against herbivores.

Read the given statements and select the correct option. Statement 1 : Irrigation without proper drainage of water leads to waterlogging in the soil. Statement 2 : Waterlogging draws salts to the soil surface, which are deposited as a thin crust on the land surface or start collecting at the roots of the plants.

Read the given statements and select the correct option. Statement 1: Pollination by bats is known as chiropterophily. Statement 2 : Pollination by ants is known as ornithophily.