QQuestionAnatomy and Physiology
QuestionAnatomy and Physiology
The main lipid components in cellular membranes are _______________.
- ☐ glycerolphospholipids
- ☐ waxes
- ☐ fatty acids
- ☐ triacylglycerols
- ☐ steroids
Which statement is not true?
- ☐ Lipids are found in cell membranes.
- ☐ All lipids contain fatty acids.
- ☐ Some hormones are lipids.
- ☐ Lipids are soluble in organic solvents.
- ☐ There are many different types of lipids.
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Step 1: Identify the main lipid components in cellular membranes.
The main lipid components in cellular membranes are glycerophospholipids and steroids. Glycerophospholipids are the most abundant type of lipid in membranes, while steroids like cholesterol provide stability to the membrane.
Step 2: Identify the incorrect statement about lipids.
The statement "Lipids are soluble in organic solvents" is not true. While lipids are soluble in nonpolar (organic) solvents, they are not soluble in polar solvents like water. This property is due to the hydrophobic nature of lipids, which prevents them from mixing with polar solvents.
Final Answer
- The main lipid components in cellular membranes are glycerophospholipids and steroids. - The statement "Lipids are soluble in organic solvents" is not true. Lipids are soluble in nonpolar solvents, but not in polar solvents like water.
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