Lesson 1 Flashcards
What is the primary function of the cell membrane?
To regulate the movement of substances in and out of the cell.
True or False: The cell membrane is composed solely of phospholipids.
False.
What are the main components of the cell membrane?
Phospholipids, proteins, cholesterol, and carbohydrates.
Multiple Choice: Which of the following is NOT a function of membrane proteins? A) Transport B) Enzymatic activity C) Genetic information storage D) Cell recognition
C) Genetic information storage.
What is the role of cholesterol in the cell membrane?
To maintain membrane fluidity and stability.
Short Answer: Describe the term ‘selectively permeable’ as it relates to the cell membrane.
It means that the cell membrane allows certain substances to pass while blocking others.
True or False: The cell membrane contains proteins that can act as receptors for signaling molecules.
True.
What is the significance of glycoproteins in the cell membrane?
They are involved in cell recognition and signaling.
Fill in the blank: The movement of water across the cell membrane is called __________.
osmosis.
