Cell Membrane and Transport
Biology ⇒ Cell Biology
Cell Membrane and Transport starts at 7 and continues till grade 12.
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See sample questions for grade 10
A cell is placed in a solution and shrinks. What type of solution is it in?
A cell uses energy to move molecules from low to high concentration. What is this process called?
Describe the direction of water movement when a cell is placed in an isotonic solution.
Describe the role of carbohydrate chains on the outer surface of the cell membrane.
A cell is placed in a solution and shrinks. What type of solution is it in?
A cell uses energy to move molecules from low to high concentration. What is this process called?
A cell is placed in a solution and begins to swell until it bursts. What does this indicate about the tonicity of the solution relative to the cell, and what process is responsible for the movement of water?
A cell is placed in a solution containing a high concentration of urea, a small polar molecule. The cell membrane is impermeable to urea. Predict and explain what will happen to the cell over time.
Which component of the cell membrane is primarily responsible for its fluidity?
(1) Phospholipids
(2) Proteins
(3) Cholesterol
(4) Carbohydrates
Which of the following best describes exocytosis?
(1) Movement of water into the cell
(2) Engulfing of large particles by the cell
(3) Release of substances from the cell
(4) Movement of ions through channels
Which of the following best describes the role of cholesterol in the cell membrane?
(1) Provides energy
(2) Increases membrane fluidity and stability
(3) Acts as a channel protein
(4) Facilitates cell division
Which of the following best describes the structure of the cell membrane?
(1) Single layer of phospholipids
(2) Double layer of phospholipids with embedded proteins
(3) Triple layer of proteins
(4) Single layer of proteins
Fill in the blank: The heads of phospholipids are ________, while the tails are ________.
Fill in the blank: The movement of molecules from an area of higher concentration to an area of lower concentration is called ________.
Fill in the blank: The movement of water across a selectively permeable membrane is called ________.
Fill in the blank: The process by which cells expel waste materials is called ________.
True or False: Carrier proteins change shape to move molecules across the membrane.
True or False: Endocytosis is a process by which cells expel materials to the outside.
True or False: Facilitated diffusion moves substances against their concentration gradient.
True or False: Pinocytosis is a type of endocytosis where the cell takes in liquid.
