Biology benchmark 2 semester exam fall 24

A biology student creates a table that shows the fuction of the four major macromolecule

Macromolecule.
Lipids.
Proteins
Nucleic acids
Carbohydrates

Fuction
Transfers oxygen in the blood
Help with muscle contractions
Store and transmit genetic information
Provide usable chemical energy for cells
For which macromolecule does the student list an incorrect fuction?
The llipids, because they are responsible for long term energy storage
The proteins , because they are responsible for helping plants retain water
The carbohydrates, because they are responsible for the structure of the cell membrane
The nucleic acids, because they are responsible for providing support for the immune system

1 answer

The student has listed an incorrect function for the nucleic acids. While nucleic acids (such as DNA and RNA) are responsible for storing and transmitting genetic information, they are not involved in providing support for the immune system.

To clarify the functions of each macromolecule:

  1. Lipids: Primarily responsible for long-term energy storage, insulation, and forming cell membranes (not water retention).

  2. Proteins: Involved in muscle contractions, immune responses, enzymatic activity, and many other functions within the body.

  3. Nucleic Acids: Store and transmit genetic information (DNA/RNA).

  4. Carbohydrates: Provide usable chemical energy for cells and serve as structural components in some organisms.

Thus, the statement about nucleic acids is the incorrect one regarding their function.

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