Answer:
Pacemaker cells are located in the <u>sinoatrial node.</u>
Contractile cells are located in the <u>Heart</u>
Explanation:
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Answer:
Why the red blood cell disc in shape is because that is how blood cells carries oxygen around. This is why blood type is important, and how people with a blood type of AB negative is so rare, this is because the AB negative blood cells doesn't have the shape to carry the oxygen needed for the body.
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Answer;
C. A decrease in the formation of ATP
Explanation;
-During the first stage of photosynthesis NADPH is created. It involves two set of molecules, that is photosystem I and photosystem II, which absorb sunlight, then convert it to chemical energy, and transfer it to electrons.
-Outside factors may cause the plant's pH level to drop during photosynthesis. When this happens, the shape of the proteins may be altered within the two photosystems and cause a decrease in the formation of NADPH, thus adversely affecting efficient photosynthesis, and cause a decrease in the formation of ATP.
They are most related to damselflies.
