Question

Is muscle protein or a group of cells(tissue)

Answer 1

What do you think

Answer 2

http://science.howstuffworks.com/life/human-biology/muscle.htm

Answer 3

Muscle is a tissue. Each muscle is actually made up of bundles of long cells that contract and relax.

Answer 4

What MGR said - muscle is a tissue made of long individual cells that run beside each other like fibers in a rope. Take apart one single muscle cell and it, in turn, contains long, rope like strands of proteins (two different kinds, actin and myosin) that run the length of the cell. A muscle actually contracts by those actin and myosin strings sliding past one another...