The purpose of t-tubules in skeletal muscle fibers is: group of answer choices a) to ensure a supply of glycogen throughout the muscle fiber b) to carry atp molecules from the mitochondria to the myosin heads c) to wrap groups of fibers together into a motor unit d) to rapidly conduct action potentials to the interior of the muscle fiber d) to ensure a supply of calcium ions through the muscle fiber.

The truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey

Bis the

Hiya,  (the properties of carbon depends on the structure of said element.)  although, carbon is not cohesive or adhesive.carbohydrates contain carbon, hydrogen, and oxygen.  it can bond with other carbon atoms as well as other elements.a polymer is a big ole' molecule made from smaller molecules that decided to smack together and form a covalent bond. but it is fact that carbon often forms polymers.decomposition of molecules simply means the organism is clearly dead and the molecules of said dead organism can be reutilized by living organisms.hope this !