<span>Cross bridges are created when myosin heads bind to ATP. This phenomenon is basically muscle contraction at work. In order for myosin heads to be bound with ATP at the actin active site, it must be excited with Calcium.
Once myosin heads bind with ATP, it begins to slide and perform muscle contractions in the body, allowing a person to move.</span>
Answer:
I think B because white blood cells fight off bacteria and stuff. I hope this is right for you! if not I am sorry! Have a great holiday.
I thinking the answer was for some genes, both alleles express together. Others combine to give an average phenotype....
C or E, the Iliac arteries are split from the descending aortic artery. They split in the pelvic following the left and right lower limbs. They then turn into the femoral arteries the run on the inside of your thigh along the inner part of your femur. However, the location that they split may be just right to also supply oxygenated blood to the reproductive organs.
Answer:
D Natural selection
Explanation:
This is because the dominant Gene according to Charles Darwin is strong enough to adapt to any environment.Making it a survival of the fittest
