Carbon commonly combines with______________?
Correct answer: D. All of these
- A. H
- B. N & O
- C. P & S
- D. All of these
Explanation
Carbon forms stable covalent bonds with hydrogen, nitrogen, oxygen, phosphorus and sulfur, allowing the construction of diverse biological molecules. These elements occur in carbohydrates, lipids, proteins, nucleic acids and other organic compounds. Students may choose only H or N and O by recalling one biomolecule class, but carbon commonly combines with all the listed elements.
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About Classification of Biological Molecules
Biological molecules are classified as carbohydrates, lipids, proteins and nucleic acids, with water, minerals and vitamins also supporting cellular processes. The key distinctions involve their monomers, chemical bonds, structures and functions, including glucose and starch, fatty acids and triglycerides, amino acids and polypeptides, and nucleotides in DNA and RNA.
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