Join thousands of students who trust us to help them ace their exams!Watch the first video
Multiple Choice
Which type of organic molecule stores the most energy per gram?
A
Lipids
B
Nucleic acids
C
Proteins
D
Carbohydrates
Verified step by step guidance
1
Understand the types of organic molecules: Lipids, Nucleic acids, Proteins, and Carbohydrates. Each of these plays a different role in biological systems and has different energy storage capacities.
Recognize that energy storage in organic molecules is related to their chemical structure and the number of high-energy bonds they contain. Lipids, for example, have long hydrocarbon chains that store energy efficiently.
Consider the energy density of each type of molecule. Lipids are known to have a higher energy density compared to carbohydrates and proteins because they contain more carbon-hydrogen bonds, which release energy when broken.
Compare the caloric content per gram of each type of molecule. Lipids typically provide about 9 kcal/g, whereas carbohydrates and proteins provide about 4 kcal/g. This indicates that lipids store more energy per gram.
Conclude that lipids are the type of organic molecule that stores the most energy per gram due to their structure and high caloric content.