11) Which of the following elements is incorrectly paired with its function in a plant? A) magnesium—component of chlorophyll; activates many enzymes B) phosphorus—component of nucleic acids, phospholipids, ATP, several coenzymes C) potassium—cofactor functional in protein synthesis; osmosis; operation of stomata D) sulfur—component of DNA; activates some enzymes 12) Which of the following has the lowest (most negative) water potential (?w)? A) soil B) root xylem C) trunk xylem D) leaf cell walls E) leaf air spaces
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Sulfur is indeed a component of some amino acids and vitamins in plants, but it is not a component of DNA. Show more…
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