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- 1. Multiple Choice
What is the main component of the cell membrane?
carbohydrates
phospholipids
proteins
cholesterol
- 2. Multiple Choice
What part of the phospholipid is hydrophobic?
the phosphate head
the fatty acid tails
both the head and the tails
neither the head nor the tails
- 3. Multiple Choice
What part of the phospholipid is hydrophilic?
the phosphate head
the fatty acid tails
both the head and the tails
neither the head nor the tails
- 4. Multiple Choice
What are 3 characteristics of the cell membrane? Check all that apply
fluid
solid
self-sealing
flexible
rigid
- 5. Multiple Choice
What is the function of the cell membrane?
store genetic information
hold the cell together
generate ATP
maintain homeostasis
- 6. Multiple Choice
Which of the following is true of osmosis?
Osmosis moves against the water concentration gradient.
Osmosis is the movement of oxygen across a membrane.
Osmosis moves water down the concentration gradient.
Osmosis requires the use of the energy molecule ATP.
- 7. Multiple Choice
The model below represents a plant cell that was tested in different solutions. Based on the model, what type of solution was the cell put in during test A?
hypotonic
hypertonic
isotonic
- 8. Multiple Choice
A student put a sample of red blood cells in a container filled with an unknown solution. Once in the container, the student noticed that the cells swelled and some of them burst. What type of solution were the red blood cells placed in?
isotonic
hypotonic
hypertonic
- 9. Multiple Choice
Which of the following molecules moves down the concentration gradient during osmosis?
protein
sodium
water
glucose
- 10. Multiple Choice
The U-shaped tube shown below contains a solution of sugar and water. The green circles represent sugar molecules dissolved in the water. The red line is a semi-permeable membrane that is only permeable to water.
How will water move in this tube?
The water levels are already equal so water will not flow through the semipermeable membrane.
Water will flow from side A into side B.
Water will flow from side B into side A.
The water is already equal, so the sugar will move from side A to side B.
- 11. Multiple Choice
A plant cell has a 5% salt concentration. It is placed into a solution containing a 12% salt concentration.
What will happen to the plant cell?
Water will move out of the plant cell, causing it to swell and burst.
Water will move into the plant cell, causing it to shrivel.
Water will move into the plant cell, causing it to swell and burst.
Water will move out of the plant cell, causing it to shrivel.
- 12. Poll
Rate your level of understanding for the cell membrane and osmosis unit from 1 - 4.
1 is "I need to study more!" - 4 "I got this!"
1 - I need to study more
2
3
4 - I got this!!!
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