Question

(02.05 mc)
what molecules can be used for long - term energy storage?
○ a adp and fat
○ b starch and fat
○ c adp and atp
○ d starch and atp

question 5 (4 points)
(02.05 mc)
fat and atp are different molecules that can both be described as molecules that store energy. compare the functions of these molecules in terms of energy storage.
○ a atp molecules are made when where there is an excess amount of energy, while fat molecules are used immediately
○ b atp molecules are used for long - term storage, while fat is used for immediate energy
○ c fat molecules are stable and can be stored for a long time, while atp is not.
○ d fat molecules are unstable and can be stored short - term, while atp molecules are stable and stored long term

Explanation:

First Question (What molecules can be used for long - term energy storage?)

• ADP is a molecule involved in energy transfer (not long - term storage), so options a and c are incorrect.
• ATP is used for immediate energy, not long - term storage, so option d is incorrect.
• Starch (a carbohydrate) and fat are both used for long - term energy storage in organisms. Starch is the storage form of glucose in plants, and fat is a very efficient long - term energy storage molecule in both plants and animals.

• Option a: ATP is used for immediate energy, not made when there is excess energy for storage, and fat is for long - term storage (not immediate use), so a is wrong.
• Option b: ATP is for immediate energy, fat is for long - term storage, so this option has them reversed, b is wrong.
• Option c: Fat molecules are stable and can be stored for a long time. ATP is unstable and is used for immediate energy needs (not suitable for long - term storage), so c is correct.
• Option d: Fat is stable for long - term storage, ATP is unstable for short - term (immediate) use, so this option has them reversed, d is wrong.

Answer:

b. Starch and fat

Second Question (Compare the functions of fat and ATP in terms of energy storage)