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15 Cards in this Set
- Front
- Back
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What sets your Basal Metabolic Rate?
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thyroxine
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Where is thyroxine produced?
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in your thyroid gland
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What are neurotransmitters?
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chemicals that allow an electrical message to be transmitted from one neuron to the next, or from from a neuron to a muscle/gland.
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What is melanin?
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A chemical that causes pigments in your skin, hair, etc.
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How much energy is required to break N2 triple bonds?
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940 kJ/mole
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What can bacteria use to break the bonds of N2 much easier?
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the enzyme nitrogenase
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Where is rhizobium frequently found?
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on nodules of legumes (peas, clover, alfalfa, soybeans, beans)
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What does the suffix -ase USUALLY mean?
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that it's an enzyme
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If a catalyst is in a living thing, what is it called?
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an enzyme
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What kind of catalyst is an enzyme?
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a biological catalyst
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Why is crop rotation useful?
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It keeps the soil from becoming depleted (stripped of its nutrients). You will not have to use as much fertilizer (which is expensive).
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Which type of fertilizer is cheaper... ammonia or nitrate?
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ammonia
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Which type of fertilizer is better for helping plants grow?
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nitrate
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All plants and animals can reduce NH4+ to what?
Can some1 confirm that all animals can do this? it think it's only plants and bacteria. animals can't do anything with NH4+, remember it kills us |
nitrate (NO3-)
~no please drink ammonia, see what happens |
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What is crop rotation?
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planting different crops on the soil each year
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