Question

Carbohydrates are important organic macromolecules needed by all living organisms. These macromolecules play a variety of vital roles.

Which of the following describe the structure or role of carbohydrates?
[Select ALL that apply]
a. Carbohydrates build the structural components of the body, such as muscles, ligaments, and tendons.
b. Carbohydrates are made of repeating units called saccharges.
c. Carbohydrates are sugars and provide quick energy for cellular functions.
d. Carbohydrates are made of repeating units called amino acids and speed up chemical reactions.
e. Carbohydrates form a bilayer to build selectively permeable cell membranes.

Answer 1

Carbohydrates are macromolecules that provide quick energy and are made up of monosaccharides, not amino acids. They do not build structural body components or form cell membrane bilayers.

Step-by-step explanation:

Carbohydrates are essential organic macromolecules that perform a variety of functions in living organisms. The roles and structures of carbohydrates can be described in the following ways:

• Carbohydrates are not involved in building the structural components of the body such as muscles, ligaments, and tendons. Therefore, option (a) is incorrect.
• The monomers that make up carbohydrates are called monosaccharides, not saccharges. Option (b) is incorrect, but it seems to be a typographical error for 'saccharides' which is often used to refer to sugars.
• Carbohydrates, which include sugars, provide quick energy for cellular functions, indicated in option (c), is correct.
• Carbohydrates are made up of monosaccharides, not amino acids, so option (d) is incorrect.
• It is lipids, not carbohydrates, that form a bilayer to build selectively permeable cell membranes, thus option (e) is incorrect.