Question

atp is important in cells because it:
a acts as a structural carbohydrate
b is large term storage for energy
c transmits genetic information
d stores and provides energy for reactions

question 9
extension question: which best explains why athletes eat pasta before a game instead of relying on lipids for energy?
a carbohydrates are hydrophobic and store more energy per gram.
b carbohydrates break down more quickly into usable energy.
c lipids are the only molecules that can be stored as glycogen.
d lipids provide faster energy than carbohydrates.

Explanation:

First Question (ATP's importance):

• Option a: Structural carbohydrates (like cellulose) have structural roles, ATP is not a structural carbohydrate. Eliminate a.
• Option b: Long - term energy storage is done by molecules like fats, ATP is for short - term energy transfer. Eliminate b.
• Option c: Genetic information is transmitted by nucleic acids (DNA, RNA), not ATP. Eliminate c.
• Option d: ATP (adenosine triphosphate) stores energy in its high - energy phosphate bonds and provides energy for cellular reactions when these bonds are broken. This matches the function of ATP.

• Option a: Carbohydrates are hydrophilic (not hydrophobic), and lipids store more energy per gram. Eliminate a.
• Option b: Pasta is rich in carbohydrates. Carbohydrates (like glucose from starch breakdown) can be broken down more quickly into ATP (usable energy) compared to lipids, which is why athletes eat pasta for quick energy before a game.
• Option c: Glycogen is a storage form of glucose (a carbohydrate), lipids are stored as fat, not glycogen. Eliminate c.
• Option d: As mentioned, carbohydrates break down faster for energy than lipids. Eliminate d.

Answer:

d. Stores and provides energy for reactions

Question 9 (Athletes eating pasta):