I think 3 represents photosynthesis, and 4 is cellular respiration being that animals and plants use cellular respiration!
Hello!!
In the human digestive system, food enters the mouth and mechanical digestion of the food starts by the action of mastication (chewing), a form of mechanical digestion, and the wetting contact of saliva.
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Answer:
I think the answer is b. DNA
Answer:
three
Explanation:
Each codon consists of <em>three nucleotides</em>, usually corresponding to a single amino acid. The nucleotides are abbreviated with the letters A, U, G and C.
The prokaryotic cell does not have a true nucleus, as the eukaryotic cell does.