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Question

Carbohydrates are made of


A

Oxygen

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B

Carbon

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C

Hydrogen

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D

All of these

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Solution

The correct option is D

All of these


The correct option is D.

Explanation for the correct option:

  1. Carbohydrates have a general formula CH2O.
  2. It is composed of oxygen, hydrogen, and carbon.
  3. Carbohydrates are sugar molecules that store energy in our body and transport it from one organ to another.
  4. Synthesis of carbohydrates takes place in plants in presence of sunlight using water and oxygen.
  5. Carbohydrate is a macronutrient that may be found in form of sugars, starches, and fibers in fruits, vegetables, grains, and milk products.

Explanation for incorrect answers:

Option A:

  1. Oxygen is an important part of carbohydrates.
  2. Oxygen alone cannot make up carbohydrates. Carbon and hydrogen is part of carbohydrate.
  3. Oxygen is an important gas found in the atmosphere. It is inhaled by animals and plants release it during photosynthesis.

Option B:

  1. Carbon is an important part of carbohydrates.
  2. Carbon along with hydrogen and oxygen comprises carbohydrates.
  3. Carbon is found in a small amount in the atmosphere. But is found in the earth's crust in other forms.

Option C:

  1. Hydrogen, carbon, and oxygen constitute carbohydrates.
  2. Hydrogen is the smallest element. It is an important component of many components including water.

Final answer: Carbohydrate is made of all of these carbon, oxygen, and hydrogen.


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