As it takes the sun about 250 million years to orbit the galaxy, the proper motion of stars relative to the Sun will be the dominant effect of changes in the sky. The visible effects of the rotation will be far slower.
All stars move in the sky, some faster some slower, and in more or less random directions, not just moving around the galaxy.
The correct answer is that "t<span>roponin holds the tropomyosin in place on the actin".
In excitation-contraction coupling, tropomyosin prevents the interaction between actin and myosin in resting muscles. In the event of excitation, there is release of calcium from the sarcoplasmic reticulum wherein the troponin will bind this calcium and will release tropomyosin and expose myosin enabling it to attach to actin and therefore facilitating muscle contraction.</span>
Answer:
Archaebacteria have cell wall made of complex composition of peptidoglycan
Yes this is true a baby can show that in a ultrasound
Answer:
The nervous system provides the link between thoughts and actions by relaying messages that travel so fast you don't even notice. Nerves and muscles, working together as the neuromuscular system, make your body move as you want it to.
Explanation:
