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In terms of permeability , the cell wall...

In terms of permeability , the cell wall and plasmalemma are :

A

permeable and differentially permeable respectively

B

both semipermeable or selectively permeable

C

semipermeable and differentially permeable

D

both differentially permeable

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The correct Answer is:
To answer the question regarding the permeability of the cell wall and plasmalemma, we can follow these steps: ### Step 1: Understand the Structure and Function of the Cell Wall The cell wall is a rigid outer layer found in plant cells. It is primarily composed of cellulose and provides structural support and protection. Importantly, the cell wall is not selective in what it allows to pass through. **Hint**: Remember that the cell wall is a rigid structure that does not regulate the movement of substances. ### Step 2: Determine the Permeability of the Cell Wall Since the cell wall does not control the entry or exit of substances, it is considered fully permeable. This means it allows all types of solutes and solvents to pass through without restriction. **Hint**: Think about how a sieve works; it allows everything to pass through without filtering. ### Step 3: Understand the Structure and Function of the Plasmalemma (Plasma Membrane) The plasmalemma, or plasma membrane, is a living, fluid structure that surrounds the cell. It is composed of a phospholipid bilayer with embedded proteins, which allows it to regulate the movement of substances into and out of the cell. **Hint**: The plasma membrane is dynamic and can change its permeability based on the needs of the cell. ### Step 4: Determine the Permeability of the Plasma Membrane The plasma membrane is differentially permeable, meaning it selectively allows certain substances to pass while restricting others. It is generally permeable to lipophilic (fat-loving) substances and impermeable to hydrophilic (water-loving) substances. **Hint**: Consider how the plasma membrane acts like a bouncer at a club, allowing only certain individuals (substances) to enter. ### Step 5: Combine the Findings Based on the analysis, we conclude that the cell wall is fully permeable, while the plasma membrane is differentially permeable. **Final Answer**: In terms of permeability, the cell wall and plasmalemma are: **permeable and differentially permeable respectively**.
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