Podcast
Questions and Answers
What does the term 'hydrophobic tail' refer to?
What does the term 'hydrophobic tail' refer to?
- Water loving
- Water fearing (correct)
- A protein with a carbohydrate attached
- A lipid with attached carbohydrates
What does the term 'hydrophilic head' refer to?
What does the term 'hydrophilic head' refer to?
- Water fearing
- A double layer of phospholipids
- Water loving (correct)
- A protein loosely bound to a membrane
What is the function of a channel protein?
What is the function of a channel protein?
Allows substances to move through the membrane.
What is a glycolipid?
What is a glycolipid?
What is cholesterol's role in cell membranes?
What is cholesterol's role in cell membranes?
What is a phospholipid bilayer?
What is a phospholipid bilayer?
What is a glycoprotein?
What is a glycoprotein?
What is a peripheral protein?
What is a peripheral protein?
What does a carbohydrate chain do?
What does a carbohydrate chain do?
Flashcards
Hydrophobic Tail
Hydrophobic Tail
The 'water-fearing' part of a molecule, repelled by water.
Hydrophilic Head
Hydrophilic Head
The 'water-loving' part of a molecule, attracted to water.
Channel Protein
Channel Protein
A protein that creates a tunnel to facilitate the movement of specific substances across a cell membrane.
Glycolipid
Glycolipid
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Cholesterol in Membranes
Cholesterol in Membranes
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Phospholipid Bilayer
Phospholipid Bilayer
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Glycoprotein
Glycoprotein
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Peripheral Protein
Peripheral Protein
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Carbohydrate Chain
Carbohydrate Chain
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Study Notes
Cell Membrane Components
- Hydrophobic Tail: Refers to the water-fearing part of a phospholipid, which avoids water and interacts with other hydrophobic substances.
- Hydrophilic Head: Denotes the water-loving part of a phospholipid, which attracts water molecules and forms the outer layer of the membrane.
Membrane Proteins
- Channel Protein (Integral Protein): Facilitates the movement of specific substances across the cell membrane, aiding in transport and communication.
- Peripheral Protein: A protein that is not embedded in the lipid bilayer but instead is loosely attached to the membrane's surface, playing roles in signaling and structural support.
Lipid Structures
- Glycolipid: A lipid molecule that has carbohydrate chains attached, contributing to cell recognition and signaling.
- Cholesterol: A crucial lipid in the cell membrane that maintains membrane fluidity and stability, especially in varying temperatures.
- Phospholipid Bilayer: Composed of two layers of phospholipids, this structure forms the basic framework of plasma and organelle membranes, providing a barrier between the cell's interior and external environment.
Identification and Signaling
- Glycoprotein: A protein that has carbohydrate chains attached, involved in cell recognition and communication.
- Carbohydrate Chain: Structures attached to proteins or lipids that function in cell identification, playing key roles in immune response and cell interactions.
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