Which structure is selectively permeable and regulates the entry and exit of sub

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Question: Which structure is selectively permeable and regulates the entry and exit of substances in a cell?

Options:

Correct Answer: Plasma membrane

Solution:

The plasma membrane is selectively permeable, allowing certain substances to pass while blocking others.

Which structure is selectively permeable and regulates the entry and exit of substances in a cell?

Which structure is selectively permeable and regulates the entry and exit of substances in a cell?

Step 1: Understand what a cell is. A cell is the basic unit of life.
Step 2: Learn about the parts of a cell. One important part is the plasma membrane.
Step 3: Know what 'selectively permeable' means. It means that the plasma membrane can choose what goes in and out of the cell.
Step 4: Realize that the plasma membrane allows some substances, like nutrients, to enter the cell while keeping out harmful substances.
Step 5: Conclude that the plasma membrane is the structure that regulates the entry and exit of substances in a cell.

No concepts available.