Cell Membrane Transport Lecture Quiz

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Questions and Answers

Cell membrane is selectively permeable, allowing some substances to pass through while blocking others

True (A)

The cell membrane maintains a difference in composition of intracellular fluid (ICF), extracellular fluid (ECF), and fluid in various organelles

True (A)

The cell membrane protects the cell from toxic substances

True (A)

The cell membrane is not involved in the excretion of waste products

False (B) Signup and view all the answers

The cell membrane's main function is to produce nutrients for the cell

False (B) Signup and view all the answers

Explain the role of the cell membrane in maintaining a difference in composition of intracellular fluid (ICF), extracellular fluid (ECF), and fluid in various organelles.

The cell membrane acts as a semi-permeable barrier, selectively allowing certain substances to pass through while blocking others. This selective permeability helps maintain the difference in composition of ICF, ECF, and fluid in various organelles. Signup and view all the answers

How does the cell membrane protect the cell from toxic substances?

The cell membrane acts as a barrier, preventing toxic substances from freely entering the cell. Its selective permeability allows beneficial substances to enter while blocking harmful ones. Signup and view all the answers

Discuss the importance of the cell membrane in the transport of nutrients.

The cell membrane facilitates the transport of nutrients from the outside to the inside of the cell, ensuring essential substances enter the cell to support its survival and function. Signup and view all the answers

Explain the concept of passive transport across the cell membrane.

Passive transport refers to the movement of materials across the cell membrane without using cellular energy. This process allows molecules to move from areas of high concentration to low concentration. Signup and view all the answers

What types of signals does the cell membrane receive from the outside, and how does it respond to these signals?

The cell membrane receives chemical and electrical signals from the outside. It can respond by allowing the entry of specific substances or triggering cellular responses based on the received signals. Signup and view all the answers