Final answer:
Conventional (type II) myosin is a motor protein found in muscle cells that is responsible for muscle contraction. It interacts with actin filaments and undergoes conformational changes to generate force and movement.
Step-by-step explanation:
Conventional (type II) myosin is a motor protein found in muscle cells that is responsible for muscle contraction. It interacts with actin filaments and undergoes conformational changes to generate force and movement. There are different types of type II myosin, such as type IIa and type IIb, which have different properties and functions. Type IIa myosin is aerobic, rich in mitochondria and capillaries, and appears red, while type IIb myosin is anaerobic, glycolytic, and less dense in mitochondria and myoglobin, giving it a pale color in small animals like rodents.