But the arrival of the dockless bike-share model was received mostly with praise and excitement in a city that has embraced biking as a mode of transportation. Some biking aficionados said they hope the companies will indeed bring more bikes to underserved communities of the District, including the Northeast and Southeast quadrants.
It sounds super-gross but please try to imagine it: Red muscles, pink muscles, and white muscles. The red muscles are red because they contain lots of myoglobin: a protein that binds iron and oxygen. Your blood has a similar protein called hemoglobin which binds iron and oxygen.
Also contain an oxygen binding protein called myoglobin, which increases rate of oxygen diffusion into the fiber. This protein gives the fibers a red color and therefore these fibers are also called red muscle fibers.ttached to the bone and moves them by contraction. The contraction is initiated by neural impulses and is under voluntary control. Structure. A muscle consists of a number of muscle fibers bound together by connective tissue and it is attached to a bone by collagen bundles called tendons.