Biology, 18.03.2021 01:30, josephraven778
Raw red alga of the genus Porphyra is part of a traditional Japanese diet. This alga is rich in porphyran, a polysaccharide that human digestive enzymes cannot break down. Marine bacteria that live on the alga produce a porphyran-digesting enzyme. In Japan, a homologous enzyme is common in one species of intestinal bacteria. Outside of Japan, people have the same species of intestinal bacteria, but they do not have the gene for the porphyran-digesting enzyme. The marine bacteria and the intestinal bacteria are not close relatives, so they most likely did not inherit the enzyme from a shared ancestor. Propose a scenario to explain the observed distribution of the enzyme.
Answers: 1
Biology, 21.06.2019 20:00, shikiaanthony
Here's one way to follow the scientific method. place the missing steps in the correct position in the process.
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Biology, 22.06.2019 03:00, keke0529
1. watermelon, papaya, oranges, bananas, and lemons are included in this food group. vitamin c 2. you need 6 or more servings of this food group each day vitamins d and a 3. found in fruit and keeps blood vessels healthy calcium 4. vitamins found in milk bread and grain 5. a mineral that strengthens bones fruit
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Raw red alga of the genus Porphyra is part of a traditional Japanese diet. This alga is rich in porp...
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