Question

1. the complex 3-d structure of this molecule is made up of a primary, secondary, tertiary, and sometimes a quaternary level. lipid protein carbohydrate nucleic acid 12. which food molecule would you eat if you had a race tomorrow afternoon? protien lipid monosaccharide polysaccharide

Explanation:

Question 9

Proteins have a complex 3 - D structure with primary (amino acid sequence), secondary (e.g., alpha - helix, beta - sheet), tertiary (overall 3 - D folding), and sometimes quaternary (multiple subunits) levels. Lipids have simpler structures, carbohydrates (except for some complex polysaccharides) don't have this hierarchical structure, and nucleic acids have a different structural hierarchy.

For a race, the body needs quick - energy. Polysaccharides (like starch) are complex carbohydrates that can be broken down into glucose (a monosaccharide) for energy, but polysaccharides are better for sustained energy storage and release. However, if we consider quick energy, but actually, for a race tomorrow, polysaccharides (like glycogen - stored or from food like pasta) are better as they are broken down to release glucose over time. But the error in the original choice was monosaccharide; polysaccharides are the correct choice here as they are a better source of energy for endurance activities. The correct option is D. Polysaccharide (note: there is a spelling error in the option "Protien" which should be "Protein", but among the given options, Polysaccharide is the correct answer for energy for a race).

Answer:

B. Protein

Question 12