The light level at which the rate of carbon uptake in photosynthesis equals the rate of carbon loss in respiration is the light ________ point
Fill in the blank(s) with correct word
compensation
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Nucleic acids have a definite polarity, or directionality. Stated another way, one end of the molecule is different from the other end. How are these ends described?
A) One end has a hydroxyl group on the 2 carbon; the other end has a hydrogen atom on the 2 carbon. B) One end contains a nitrogenous base; the other end lacks it. C) One end has an unlinked 3 carbon; the other end has an unlinked 5 carbon. D) One end has one phosphate group; the other end has two phosphate groups.
A hectare of wheat fixes 32,000 kg of carbon per year through photosynthesis and uses 7,000 kg of carbon per year for cellular respiration. The net primary productivity of the wheat field is therefore _____ kg of carbon/hectare/year.
Fill in the blank(s) with the appropriate word(s).
A balancer chromosome includes a recessive lethal allele, a marker dominant allele, and ________
Fill in the blank(s) with correct word
Deficiency of which nutrient can cause muscle cramps, irregular heartbeat, or paralysis?
A) iron B) sulfur C) copper D) potassium