Recent Lessons

Show all results for ""

10 Questions

0 Views

Cell Membrane Structure and Functions

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary function of the cell membrane in maintaining homeostasis?

To coordinate activity with other cells
To maintain the ionic gradient for electrical activity
To exchange nutrients and waste with the environment (correct)
To provide mechanical support to the cell

What is the purpose of the phospholipid bilayer in the cell membrane?

To coordinate activity with other cells
To provide mechanical support to the cell
To maintain the ionic gradient for electrical activity
To create a barrier to the passage of water and soluble substances (correct)

What is the role of cholesterol in the cell membrane?

To create a barrier to the passage of water
To provide mechanical support to the cell
To maintain the ionic gradient for electrical activity
To provide fluidity and stability to the membrane (correct)

What type of protein is covalently bonded to the cell membrane?

Integral protein (C) Signup and view all the answers

What is the function of the cell membrane in relation to the environment?

To respond to changes in the environment (A) Signup and view all the answers

What is the primary function of aquaporins in the cell membrane?

Facilitating the movement of water molecules (C) Signup and view all the answers

What type of molecule can pass through ions channels in the cell membrane?

Specific ions (C) Signup and view all the answers

What is the primary difference between aquaporins and ion channels?

The type of molecule they allow to pass through (C) Signup and view all the answers

What is the common function of both aquaporins and ion channels?

Facilitating the movement of molecules across the cell membrane (B) Signup and view all the answers

What is the general category of proteins that includes both aquaporins and ion channels?

Transport proteins (B) Signup and view all the answers