Question

1. if you were only able to eat one time during a day, what macromolecule would give you a source of a large amount of stored energy? ______
2. if you were eating dinner to go play basketball later, what macromolecule would provide quick usable energy? ______
3. in order to repair muscles, what macromolecule should you eat? ______
4. two unknown foods were analyzed. food a had 40 g of carbs, 2 gs of lipids, and 5 gs of proteins. food b had 7gs of carbs, 30gs of lipids, and 12gs of proteins. which food would you expect to create a larger flame and cause the largest increase in water temperature? why? use cer.

(table with columns: claim, evidence, reasoning)

Explanation:

For Question 13 (CER Table Completion)

Claim:

Food B would create a larger flame and cause the largest increase in water temperature.

Evidence:

• Food A: 40g carbs, 2g lipids, 5g proteins
• Food B: 7g carbs, 30g lipids, 12g proteins
• Lipids provide more energy per gram ($\approx 9$ kcal/g) than carbs/proteins ($\approx 4$ kcal/g). Food B has 30g lipids (vs. Food A’s 2g), so it has more high - energy - density macromolecules.

Reasoning:

Energy released from burning food is related to the energy content of its macromolecules. Lipids have a higher caloric value per gram. Food B has a much larger amount of lipids (30g) compared to Food A (2g). Even though Food A has more carbs, the high energy density of lipids means that the total energy from Food B’s lipids (and combined macromolecules) will be greater. More energy released will lead to a larger flame and a greater increase in water temperature (as more heat is transferred to the water).

For Question 10:

Lipids (fats) are the macromolecule that can store the most energy per gram. They are used for long - term energy storage in the body. Carbohydrates are for quick energy, and proteins are mainly for structure and function, not long - term energy storage. So if you can only eat once a day, lipids would give a large amount of stored energy.

Carbohydrates are the body's primary source of quick - usable energy. They are broken down relatively quickly into glucose, which can be used by cells for energy. Lipids are for long - term storage and take longer to break down, and proteins are not the main source of quick energy. So for a quick energy boost before playing basketball, carbohydrates are best.

Proteins are the macromolecules needed for muscle repair. Muscles are made up of protein - rich tissues, and when muscles are damaged (during exercise, for example), protein is needed to build and repair the muscle fibers. Carbohydrates are for energy, and lipids are for storage, so to repair muscles, you should eat foods rich in proteins.

Answer:

Lipids

For Question 11: