11 The electron transport chain is a group of compounds that pass an electron from one to another coupled with the transfer of proton across a membrane to create a proton gradient that drives ATP synthesis/creation. True
False

12 is the green pigment found in the chloroplasts of higher plants, which is primarily involved in absorbing light energy for photosynthesis?

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he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

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these muscles maintain the blood pressure in the vessels. the smooth muscles are innervated by nerves of the autonomic nervous system. when the muscles contract, they cause vasoconstriction of the vessels and increase blood pressure. when the muscles relax, they enable vasodilation of the   blood vessels hence reduce blood pressure.