Who is grand old man of intestine and how many flagella it possess

 what is ATP

 oxidative phosphorylation

can i plzzz have the structure of meromyosin?

what are the modifications that are observed in birds that help them fly? what is importance of air bladder in pisces

give short note on myoglobin.

functions of skeletal system?

Define ureotelism and ammonotelism.

mechanism of muscle contraction

what are the mechanism of muscle contraction?

what is the function of skull?

can anyone explain me the mechanism of muscle contraction in brief????i need the answer as soon as possible!!!!don't have too much time left!!!!!!!