Will muscle contraction occur in the following conditions. Justify your answer .
a) Troponin is removed from the thin filament.
b) No ATP is supplied to the muscle.
c) All endoplasmic reticulum are removed from muscle cells.

Mention whether the following statements true or false. Justify your answer: a) Chymotrypsin is a fat digesting enzyme. b) Deglutition occurs in the intestine, c) Intestinal juice is also known as succus entericus, d) Function of enterokinase is to break peptide bond in proteins.

(## EXP_VAD_ZOO_XI_C09_E03_005_Q01 .png" width="80%"> a) Observe the above graph and find out the region of graph where muscle show maximum contraction. Justify your answer. b) Name the different types of muscle proteins present in thick and thin filaments. c) ca^(2+) is necessary for muscle contraction. Why?

A muscle cell viewed under a microscope shown the following characters. Shape - Cylindrical Nucleus - Multinuclear Striation - Present a) Identify the muscle cell. b) Calcium ions are necessary for muscle contraction. if a muscle is placed in a solution containing calcium ions. Does the muscle contracts ? Substantiate.