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 8
Describe the fluid mosaic model of the cell membrane.
Describe what happens to a plant cell placed in pure water.
Describe what would happen to a red blood cell placed in pure water.
Explain the difference between endocytosis and exocytosis.
Describe what happens to a plant cell placed in pure water.
Describe what would happen to a red blood cell placed in pure water.
Explain why plant cells do not burst when placed in pure water, but animal cells do.
What happens to an animal cell placed in a very salty solution?
Which of the following best describes exocytosis?
(1) Movement of water into the cell
(2) Release of substances from the cell
(3) Movement of ions through channels
(4) Diffusion of gases
Which of the following best describes the arrangement of phospholipids in the cell membrane?
(1) Single layer with heads facing out
(2) Double layer with tails facing each other
(3) Double layer with heads facing each other
(4) Single layer with tails facing out
Which of the following best describes the main function of the cell membrane?
(1) It provides energy for the cell.
(2) It controls what enters and leaves the cell.
(3) It produces proteins.
(4) It stores genetic information.
Which of the following is a function of membrane proteins?
(1) Acting as enzymes
(2) Transporting substances
(3) Cell recognition
(4) All of the above
Fill in the blank: The cell membrane helps maintain ________ by controlling what enters and leaves the cell.
Fill in the blank: The cell membrane is described as ________ permeable because it allows some substances to pass through but not others.
Fill in the blank: The movement of large particles into the cell by engulfing them is called ________.
Fill in the blank: The movement of molecules against their concentration gradient is called ________ transport.
True or False: Facilitated diffusion requires energy from the cell.
True or False: Only animal cells have a cell membrane.
True or False: The cell membrane is also known as the plasma membrane.
True or False: The cell membrane is found in both prokaryotic and eukaryotic cells.
