AP BIOLOGY

BIOCHEMISTRY

ORGANIC COMPOUNDS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which macromolecule stores energy, insulates us, and makes up the cell membrane?
A
lipids
B
proteins
C
carbohydrates
D
nucleic acids
Explanation: 

Detailed explanation-1: -So, the correct answer is Lipids.

Detailed explanation-2: -So, the correct answer is Lipids.

Detailed explanation-3: -Carbohydrates are energy-rich. Many, such as glycogen, provide energy-storage functions. Other carbohydrates, such as cellulose-a component of plant cell walls-serve primarily structural roles in a cell. Lipids are the only macromolecules that are not polymers.

Detailed explanation-4: -Lipids provide long-term energy storage, form cell membranes (phospholipids). The provide insulation, and cushioning of internal organs, and partake in the messaging process in the body (hormones).

Detailed explanation-5: -The fundamental building blocks of all cell membranes are phospholipids, which are amphipathic molecules, consisting of two hydrophobic fatty acid chains linked to a phosphate-containing hydrophilic head group (see Figure 2.7).

There is 1 question to complete.