Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Question
**Diagram Explanation:**
The diagram above illustrates various components of the cell membrane. Here's a detailed breakdown of each labeled structure:
- **A:** This is a phospholipid bilayer segment, crucial for the membrane's fluidity and structure.
- **B, H, I:** These represent different types of proteins embedded within or associated with the membrane. They serve various roles like transport, signaling, and maintaining membrane integrity.
- **C:** These are carbohydrate chains attached to proteins or lipids, often functioning as identity tags for cell recognition.
- **D, E:** Zoomed into the phospholipid bilayer, illustrating the hydrophilic (D) and hydrophobic (E) regions.
- **F:** Depicts a molecule inside the lipid bilayer, possibly cholesterol, which helps in maintaining the fluidity of the membrane.
- **G:** Represents a different type of protein channel or pump.
**Functions Matching:**
1. **B** - Identity tag
2. **H** - Non-selective transport of ions
3. **G** - Maintains the fluidity of the membrane
4. **I** - Non-polar part of the membrane
5. **F** - Selective transport of sugars and amino acids
6. **E** - May be attached to the microfilaments of the cytoskeleton
**Discussion:**
- **Proteins (B, H, G, I, F):** They play various roles ranging from transporting substances across the membrane, acting as enzymes, or serving structural roles.
- **Lipids (A, D, E):** Phospholipids form the fundamental structure of the membrane with hydrophilic heads (D) and hydrophobic tails (E), creating a bilayer that serves as a semi-permeable barrier.
- **Carbohydrates (C):** Often linked to proteins or lipids, they form glycoproteins and glycolipids involved in cell recognition and interaction.
By understanding these components and their functions, we get insights into how cell membranes regulate the movement of substances and interact with their environment.
**Next Steps:**
Click "Save and Submit" to save your responses and submit your answers. Use "Save All Answers" to ensure all](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fdcca0ccf-6580-4b41-a47a-5849ceef3377%2F6ace5c0a-bdd6-441f-a414-c0040157bdd8%2F7dl71kl_reoriented.jpeg&w=3840&q=75)
Transcribed Image Text:### Educational Content: Cell Membrane Structure and Function
#### Question 2
**Objective:** Match the letters in the diagram with the function of the structure indicated.
**Diagram Explanation:**
The diagram above illustrates various components of the cell membrane. Here's a detailed breakdown of each labeled structure:
- **A:** This is a phospholipid bilayer segment, crucial for the membrane's fluidity and structure.
- **B, H, I:** These represent different types of proteins embedded within or associated with the membrane. They serve various roles like transport, signaling, and maintaining membrane integrity.
- **C:** These are carbohydrate chains attached to proteins or lipids, often functioning as identity tags for cell recognition.
- **D, E:** Zoomed into the phospholipid bilayer, illustrating the hydrophilic (D) and hydrophobic (E) regions.
- **F:** Depicts a molecule inside the lipid bilayer, possibly cholesterol, which helps in maintaining the fluidity of the membrane.
- **G:** Represents a different type of protein channel or pump.
**Functions Matching:**
1. **B** - Identity tag
2. **H** - Non-selective transport of ions
3. **G** - Maintains the fluidity of the membrane
4. **I** - Non-polar part of the membrane
5. **F** - Selective transport of sugars and amino acids
6. **E** - May be attached to the microfilaments of the cytoskeleton
**Discussion:**
- **Proteins (B, H, G, I, F):** They play various roles ranging from transporting substances across the membrane, acting as enzymes, or serving structural roles.
- **Lipids (A, D, E):** Phospholipids form the fundamental structure of the membrane with hydrophilic heads (D) and hydrophobic tails (E), creating a bilayer that serves as a semi-permeable barrier.
- **Carbohydrates (C):** Often linked to proteins or lipids, they form glycoproteins and glycolipids involved in cell recognition and interaction.
By understanding these components and their functions, we get insights into how cell membranes regulate the movement of substances and interact with their environment.
**Next Steps:**
Click "Save and Submit" to save your responses and submit your answers. Use "Save All Answers" to ensure all
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