Question

what do lipids (predominantly) consist of, besides carbon and hydrogen?
a. phosphorus
b. oxygen
c. sulfur
d. nitrogen
carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur are collectively known as
a. organic compounds
b. chnops
c. biomolecules
d. elements of life
the presence of phosphorus in atp molecules is crucial for
a. protein folding
b. genetic information storage
c. cellular respiration
d. energy transfer within cells

Explanation:

1. Lipids are primarily made of carbon, hydrogen, and oxygen; oxygen is the key additional element here.
2. Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, Sulfur are abbreviated as CHNOPS, which is their collective acronym.
3. ATP's phosphate groups store and transfer energy via high-energy bonds, so phosphorus is critical for this cellular energy transfer.

Answer:

1. b. Oxygen
2. b. CHNOPS
3. d. Energy Transfer within Cells