A student drew the following model. Glycolysis
Krebs cycle
Electron transport chain
ATP
Which phrase is the best summary of the model?
A. A food chain
B. A net transfer of
energy
o
C. A series of light and dark reactions
D. A series of trophic levels

C. A series of light and dark reactions

chemical because it warmed up which involves temperature and it bubbled which includes changing

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carbohydrates: (starches and sugars) composed of carbon, hydrogen, and oxygen.

lipids: (fats, oils, and waxes) are made of carbon and hydrogen atoms.

nucleic acids: contain hydrogen, oxygen, nitrogen, carbon, and phosphorus. they are polymers of nucleotides. a nucleotide has three parts, a 5-carbon sugar, a phosphate     (-po⬇️4) group, and a nitrogenous base.

proteins: made up of nitrogen, carbon, hydrogen, and oxygen. they are polymers of amino acids.