Questions: Select all that apply Choose the true statements about protein. Proteins are organic molecules. All living organisms contain protein. Proteins are made of carbon, hydrogen, oxygen, and nitrogen.

Select all that apply
Choose the true statements about protein.
Proteins are organic molecules.
All living organisms contain protein.
Proteins are made of carbon, hydrogen, oxygen, and nitrogen.
Transcript text: Select all that apply Choose the true statements about protein. Proteins are organic molecules. All living organisms contain protein. Proteins are made of carbon, hydrogen, oxygen, and nitrogen.
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Solution

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The true statements about protein are:

  1. Proteins are organic molecules.
  2. All living organisms contain protein.
  3. Proteins are made of carbon, hydrogen, oxygen, and nitrogen.

Explanation for each option:

  1. Proteins are organic molecules.

    • This statement is true. Proteins are organic molecules because they contain carbon atoms and are found in living organisms.
  2. All living organisms contain protein.

    • This statement is true. Proteins are essential macromolecules found in all living organisms, playing critical roles in structure, function, and regulation of the body's tissues and organs.
  3. Proteins are made of carbon, hydrogen, oxygen, and nitrogen.

    • This statement is true. Proteins are composed of amino acids, which contain carbon, hydrogen, oxygen, and nitrogen atoms. Some proteins may also contain sulfur and other elements.
  4. Proteins are chemically identical to carbohydrates and lipids.

    • This statement is false. Proteins, carbohydrates, and lipids are different types of macromolecules with distinct structures and functions. While they all contain carbon, hydrogen, and oxygen, proteins also contain nitrogen (and sometimes sulfur), which distinguishes them from carbohydrates and lipids.

Summary: The true statements about protein are:

  • Proteins are organic molecules.
  • All living organisms contain protein.
  • Proteins are made of carbon, hydrogen, oxygen, and nitrogen.
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