CSS :: Muscle Contraction Physiology

@ : Home > Zoology > Muscle Contraction Physiology

Muscular contraction involves which of these events:

A.	Biochemical events only	B.	Biophysical events only
C.	Both (a) & (b)	D.	None of these

The energy required for muscular contraction is derived from:

A.	Action	B.	Myosin
C.	Actomyosin	D.	ATP

Besides ATP the other sources of providing energy for muscular contraction are:

A.	Breakdown of creatine phosphate	B.	Myokinase activity
C.	Both (a) & (b)	D.	None of these

Which of these reactions are correct:

A.	Creatine phosphate + ATP ?Creatine + 2ADP	B.	Creatine phosphate ? Creatine + H3PO4 ADP + H3PO4 ? ATP
C.	Both (a) & (b)	D.	None of these

During biochemical events or muscle contraction which of these processes occur:

A.	Breakdown of ATP into ADP	B.	Breakdown of creatine phosphate into creatine + H2PO4
C.	Breakdown of muscle glycogen into lactic acid	D.	All of these processes

During first stage of breakdown of glycogen which of these occur:

A.	Glycogen ? formation of glucose-6-phosphate	B.	Glycogen ? pyruvic acid
C.	Glycogen ? lactic acid	D.	None of these

Formation of lactic acid from pyruvic acid during muscle contraacton is catelyzed by which of these enzymes:

A.	Glycokinase	B.	Phosphohexoisomerase
C.	Lactic dehydrogenase	D.	All of these enzymes mentioned

Which of these substances on accumulation causes muscular fatigue:

A.	Pyruvic acid	B.	Creatine phosphate
C.	Lactic acid	D.	None of these

During recovery phase of muscle contraction the processes occurring are:

A.	Breakdown of lactic acid formed during contraction phosphate	B.	Resynthesis of creatine phosphate
C.	Resynthesis of ATP	D.	All of these

10.

The decomposition of lactic acid is done by:

A.	Converting it to glycogen	B.	Converting it into CO2 and H2O
C.	Both of these processes	D.	None of these processes