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Tutor profile: Rexhina S.

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Rexhina S.
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Questions

Subject: Earth Science

TutorMe
Question:

Name all the layers of the earth's atmosphere from highest to lowest.

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Rexhina S.
Answer:

Exosphere: 700 to 10,000 km (440 to 6,200 miles) Thermosphere: 80 to 700 km (50 to 440 miles) Mesosphere: 50 to 80 km (31 to 50 miles) Stratosphere: 12 to 50 km (7 to 31 miles) Troposphere: 0 to 12 km (0 to 7 miles)

Subject: Chemistry

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Question:

Define a macromolecule

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Rexhina S.
Answer:

a molecule containing a very large number of atoms, such as a protein, nucleic acid, or synthetic polymer.

Subject: Biology

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Question:

Discuss the importance of water in biology and the four organic molecule groups.

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Rexhina S.
Answer:

Water is an excellent solvent, which means many other substances dissolve in water. Water stabilizes temperature. Water has cohesion and adhesion meaning it resists separating from itself. All living organisms are mostly made up of water and it is a source of nutrients 4 Organic molecules: Carbohydrates - 1:2:1 ratio and is a food source sugar/ energy Lipids - fatty, oily, steroids, or waxy - water proof Proteins - consists or 1 or more chains of amino acids/ food source Nucleic Acids - DNA or RNA carry hereditary material

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