Lipids - AP Biology
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What is the impact of trans fats on health?
What is the impact of trans fats on health?
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Increase risk of cardiovascular disease. Artificial trans configuration promotes atherosclerosis.
Increase risk of cardiovascular disease. Artificial trans configuration promotes atherosclerosis.
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Which lipids are primarily responsible for water-repellency in plants?
Which lipids are primarily responsible for water-repellency in plants?
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Waxes. Protective coating on leaves and stems.
Waxes. Protective coating on leaves and stems.
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Which lipid is commonly found in adipose tissue?
Which lipid is commonly found in adipose tissue?
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Triglycerides. Fat storage cells for energy reserves.
Triglycerides. Fat storage cells for energy reserves.
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Which type of lipids are involved in signaling within cells?
Which type of lipids are involved in signaling within cells?
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Steroids. Act as hormones and membrane components.
Steroids. Act as hormones and membrane components.
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Which lipid is commonly found in adipose tissue?
Which lipid is commonly found in adipose tissue?
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Triglycerides. Fat storage cells for energy reserves.
Triglycerides. Fat storage cells for energy reserves.
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What is the storage form of lipids in animals?
What is the storage form of lipids in animals?
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Triglycerides. Stored in adipose tissue for long-term energy.
Triglycerides. Stored in adipose tissue for long-term energy.
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How do lipids contribute to the fluidity of cell membranes?
How do lipids contribute to the fluidity of cell membranes?
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By preventing fatty acid chains from packing tightly. Unsaturated fatty acids prevent rigid packing.
By preventing fatty acid chains from packing tightly. Unsaturated fatty acids prevent rigid packing.
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Which lipid is known for being a precursor to hormones?
Which lipid is known for being a precursor to hormones?
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Cholesterol. Steroid structure serves as backbone for hormone synthesis.
Cholesterol. Steroid structure serves as backbone for hormone synthesis.
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Which type of lipids are involved in signaling within cells?
Which type of lipids are involved in signaling within cells?
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Steroids. Act as hormones and membrane components.
Steroids. Act as hormones and membrane components.
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What distinguishes omega-3 from omega-6 fatty acids?
What distinguishes omega-3 from omega-6 fatty acids?
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Position of the first double bond from the methyl end. Number indicates double bond location from methyl end.
Position of the first double bond from the methyl end. Number indicates double bond location from methyl end.
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Which lipid is a precursor for vitamin D synthesis?
Which lipid is a precursor for vitamin D synthesis?
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Cholesterol. UV exposure converts cholesterol to vitamin D.
Cholesterol. UV exposure converts cholesterol to vitamin D.
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What is the function of sphingolipids in cells?
What is the function of sphingolipids in cells?
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Participate in cell signaling and recognition. Membrane components involved in cell communication.
Participate in cell signaling and recognition. Membrane components involved in cell communication.
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Which lipids are primarily responsible for water-repellency in plants?
Which lipids are primarily responsible for water-repellency in plants?
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Waxes. Protective coating on leaves and stems.
Waxes. Protective coating on leaves and stems.
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What is the storage form of lipids in animals?
What is the storage form of lipids in animals?
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Triglycerides. Stored in adipose tissue for long-term energy.
Triglycerides. Stored in adipose tissue for long-term energy.
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Which type of lipid is most abundant in the brain?
Which type of lipid is most abundant in the brain?
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Phospholipids. Essential for neural membrane structure and function.
Phospholipids. Essential for neural membrane structure and function.
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Identify the process of breaking down triglycerides.
Identify the process of breaking down triglycerides.
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Lipolysis. Breaks down stored fats into fatty acids and glycerol.
Lipolysis. Breaks down stored fats into fatty acids and glycerol.
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Identify the molecule from which all steroids are derived.
Identify the molecule from which all steroids are derived.
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Cholesterol. Common steroid backbone for hormone synthesis.
Cholesterol. Common steroid backbone for hormone synthesis.
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What is the role of essential fatty acids in the body?
What is the role of essential fatty acids in the body?
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They are precursors to signaling molecules. Required for synthesis of important cellular messengers.
They are precursors to signaling molecules. Required for synthesis of important cellular messengers.
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Which lipids are involved in the formation of eicosanoids?
Which lipids are involved in the formation of eicosanoids?
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Arachidonic acid. 20-carbon fatty acid precursor to signaling molecules.
Arachidonic acid. 20-carbon fatty acid precursor to signaling molecules.
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What is the main energy source during prolonged fasting?
What is the main energy source during prolonged fasting?
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Fatty acids from triglycerides. Released through lipolysis when glucose is depleted.
Fatty acids from triglycerides. Released through lipolysis when glucose is depleted.
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Which lipid is a precursor for vitamin D synthesis?
Which lipid is a precursor for vitamin D synthesis?
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Cholesterol. UV exposure converts cholesterol to vitamin D.
Cholesterol. UV exposure converts cholesterol to vitamin D.
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Which lipid-soluble vitamins are stored in adipose tissue?
Which lipid-soluble vitamins are stored in adipose tissue?
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Vitamins A, D, E, K. Require lipids for absorption and storage.
Vitamins A, D, E, K. Require lipids for absorption and storage.
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What is the impact of trans fats on health?
What is the impact of trans fats on health?
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Increase risk of cardiovascular disease. Artificial trans configuration promotes atherosclerosis.
Increase risk of cardiovascular disease. Artificial trans configuration promotes atherosclerosis.
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Identify the type of bond formed between glycerol and fatty acids.
Identify the type of bond formed between glycerol and fatty acids.
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Ester bond. Covalent bond linking fatty acid to glycerol.
Ester bond. Covalent bond linking fatty acid to glycerol.
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Identify the lipid responsible for providing buoyancy to marine animals.
Identify the lipid responsible for providing buoyancy to marine animals.
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Squalene. Lower density than water provides flotation.
Squalene. Lower density than water provides flotation.
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What distinguishes omega-3 from omega-6 fatty acids?
What distinguishes omega-3 from omega-6 fatty acids?
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Position of the first double bond from the methyl end. Number indicates double bond location from methyl end.
Position of the first double bond from the methyl end. Number indicates double bond location from methyl end.
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What is the role of lipids in thermal insulation?
What is the role of lipids in thermal insulation?
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They reduce heat loss by forming insulating layers. Low thermal conductivity prevents heat transfer.
They reduce heat loss by forming insulating layers. Low thermal conductivity prevents heat transfer.
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How do lipids contribute to the fluidity of cell membranes?
How do lipids contribute to the fluidity of cell membranes?
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By preventing fatty acid chains from packing tightly. Unsaturated fatty acids prevent rigid packing.
By preventing fatty acid chains from packing tightly. Unsaturated fatty acids prevent rigid packing.
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What is the main characteristic of amphipathic lipids?
What is the main characteristic of amphipathic lipids?
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Contain both hydrophilic and hydrophobic regions. Enable membrane formation and self-assembly.
Contain both hydrophilic and hydrophobic regions. Enable membrane formation and self-assembly.
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What are the primary components of lipids?
What are the primary components of lipids?
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Fatty acids and glycerol. Basic building blocks that combine to form complex lipid molecules.
Fatty acids and glycerol. Basic building blocks that combine to form complex lipid molecules.
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