Question

1. discuss the types of trace elements in organic compounds

answer
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(score for question 2: __ of 3 points)

1. discuss how compounds in different types of organisms can be used to benefit people

answer
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(score for question 3: __ of 3 points)

1. describe what is meant when water is called a polar molecule

answer
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Explanation:

1. Trace elements in organic compounds include iron, zinc, copper etc. They play crucial roles in enzyme - activity and metabolism.
2. Compounds in organisms like plant - derived drugs, animal - sourced nutrients can be used for medicine, food supplements etc.
3. Water is a polar molecule because oxygen is more electronegative than hydrogen, creating a partial negative charge on oxygen and partial positive charges on hydrogen, resulting in a dipole moment.

Answer:

1. Trace elements in organic compounds include iron, zinc, copper, manganese, etc. They are essential for various biological functions such as enzyme - catalyzed reactions and maintaining proper cellular function.
2. Compounds in plants can be used as sources of medicine (e.g., aspirin from willow bark), food (e.g., carbohydrates from grains), and fibers. Compounds in animals can provide nutrients like proteins and fats, and some animal - derived substances are used in medical research and treatment (e.g., heparin from animal tissues).
3. When water is called a polar molecule, it means that due to the unequal sharing of electrons between the oxygen and hydrogen atoms. Oxygen, being more electronegative, attracts the shared electrons more strongly, creating a partial negative charge (δ -) on the oxygen atom and partial positive charges (δ +) on the hydrogen atoms. This separation of charges gives water its polar nature.