Which of the following is NOT a way that fats are used in living things?(1 point)
to store energy
as parts of biological membranes
as chemical messengers
to give plants rigidity
to give plants rigidity
The correct answer is "to give plants rigidity."
To determine which of the options is NOT a way that fats are used in living things, we need to consider each option individually and eliminate the one that does not fit.
1. To store energy: Fats are indeed used as an energy storage mechanism in living things. In organisms such as humans and animals, excess energy is stored in the form of fat molecules.
2. As parts of biological membranes: Fats, specifically phospholipids, are crucial components of biological membranes. Lipid bilayers make up the structure of cell membranes, providing a barrier that separates the contents of cells from the external environment.
3. As chemical messengers: Certain types of fats, such as steroid hormones, act as chemical messengers in the body. Examples include cortisol and testosterone, which regulate various physiological processes.
4. To give plants rigidity: This option stands out as the odd one out. Fats do not provide plants with rigidity. Instead, plants maintain structural support through other compounds, such as cellulose in the cell walls.
Therefore, the correct answer is: To give plants rigidity.