Answer:
This similarity indicates that mice share a common ancestor with humans. Mice have a tail, while humans have a tailbone
A. parasitism. The plasmodium is helped while the human host, harmed.
b. mutualism. The bacteria is supplied with a living environment while the host human is supplied with vitamin K
Homeostasis: A state of balance reached through reactions within a cell or organism.
Metabolism: The total of all chemical reactions within an organism.
Organism: Any living thing that takes in food, grows, and reproduces.
Answer:
<u>Once the myosin-binding sites are exposed, and if sufficient ATP is present, myosin binds to actin to begin cross-bridge cycling. Then the sarcomere shortens and the muscle contracts. In the absence of calcium, this binding does not occur, so the presence of free calcium is an important regulator of muscle contraction.</u>
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