Biology, 11.07.2019 12:50, hoperodriguez3111
Nitrogen is one of the important elements for life. nitrogen is present in dna and proteins. it’s also a component of water chlorophyll air in plants, a pigment that’s critical for photosynthesis. although nitrogen is present in the air, it can’t be consumed directly. it’s converted into usable form by bacteria animals plants .nextreset
Answers: 2
Biology, 22.06.2019 06:30, 10040813
Amino acids contain the elements carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. of the 20 amino acids found in humans, 11 are called "nonessential" because they can be manufactured by the body when needed. which elements in these 11 amino acids are commonly obtained from the metabolism of sugar molecules?
Answers: 1
Biology, 22.06.2019 11:30, annsmith66
Ihave no idea how to solve these. plus there's another question that is 2) a 10 kilogram meteorite is collected in space and brought back to earth. it is composed of 1.25 kg of uranium-238 and 8.75 kg of lead-206. how many u-238 half lives have passed? what is the approximate age of the meteorite?
Answers: 1
Nitrogen is one of the important elements for life. nitrogen is present in dna and proteins. it’s al...
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