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Questions and Answers
Describe the structure of a phospholipid and its behavior towards water.
A phospholipid has a hydrophilic head and a hydrophobic tail, which causes it to form a bilayer structure when added to water, with the hydrophilic heads facing outwards and the hydrophobic tails facing inwards.
What is the structural characteristic of steroids that distinguishes them from other lipids?
Steroids have a carbon skeleton containing four fused rings.
What is the role of cholesterol in animal cell membranes?
Cholesterol is a common component of animal cell membranes and a precursor from which other steroids are synthesized.
What is the function of enzymes in living organisms?
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How do saturated fats and trans fats affect health?
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What is the significance of proteins in cells?
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What is the relationship between a phospholipid bilayer and the cell's external environment?
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What is the role of cholesterol in the synthesis of other steroids?
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How do phospholipids behave when added to water?
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What is the significance of the phospholipid bilayer in cell membranes?
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