3 years ago

Which protein severs as a chemical messenger

Biology

1 answer:

melisa1 [442]3 years ago

7 0

Hemoglobin serves as a chemical messenger

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Is the length of shadows at noon higher in summer or winter?

vivado [14]

Answer: Winter shadows are long because sunlight is spread out. The Sun appears low in the sky even at noon. Summer shadows are short because the light is concentrated in a small area.

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3 years ago

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Salmon eggs hatch in fresh water. The fish then migrate to the ocean (a hypertonic solution) and, after several years of feeding

Ray Of Light [21]

Answer:

Letter C

Explanation:

Salmon have a physiological adaptation that allows osmoregulation to occur in two different environments (seawater and freshwater). There are specific molecules in the salmon gills that "pump" and "remove" Na and Cl ions. When at sea these molecules pump the ions out of the salmon's body and into freshwater, the same molecules remove Na and Cl from the water bringing it into the animal's blood.