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- 1. Multiple Choice
When the number of water molecules outside of the cell is greater than inside the cell, which will most likely occur?
Molecules of water will NOT MOVE either way.
Molecules of water will move OUT of the cell.
Molecules of water will move INTO the cell.
Molecules of water will EVAPORATE.
- 2. Multiple Choice
A cell that is unable to import substances required to process chemical energy is most likely a result of a malfunctioning of the ____________________.
cell membrane
golgi body
endoplasmic reticulum
nuclear envelope
- 3. Multiple Choice
Cell membranes are described as selectively permeable.
Four students were asked to explain what this means. Which one is correct?
Student 1: Cell membranes prevent all materials from entering the cell.
Student 2: Cell membranes only provide structural support for the cell.
Student 3: Cell membranes regulate which substances can enter and exit the cell.
Student 4: Cell membranes allow water and water-soluble substances to enter the cell.
- 4. Multiple Choice
Which part of the cell controls the movement of substances?
mitochondria
cell membrane
chloroplast
nucleus
- 5. Multiple Choice
The thin, semi-permeable membrane that encloses a cell allows nutrients to enter and wastes to be ____________________.
digested
recycled
protected
removed
- 6. Multiple Choice
All of the following are functions of a cell membrane EXCEPT
surrounding and protecting the contents of the cell.
releasing waste products from the cell.
producing energy for the cell processes.
allowing gases to enter the cell.
- 7. Multiple Choice
Why are water molecules able to enter the egg but NOT the sugar molecules?
Sugar molecules are too heavy.
The holes of the semi-permeable membrane were too small to let sugar molecules through.
Semi-permeable membranes need energy.
Semi-permeable membranes must be under pressure to work.
- 8. Multiple Choice
Which characteristic of a cell membrane allows it to control materials entering and leaving a cell?
A cell membrane is surrounded by fluid.
A cell membrane is semi-permeable.
A cell membrane holds organelles in place.
A cell membrane is found in plant and animal cells.
- 9. Multiple Choice
The processes of diffusion AND active transport are both used to...
break down molecules to release energy
move molecules into or out of cells of the body
bring molecules into cells ONLY when they are more concentrated outside of the cell
move molecules ONLY against a concentration gradient, using ATP molecules
- 10. Multiple Choice
A child with cystic fibrosis has an altered protein in his cells that stops chloride ions from leaving the cells. This protein most likely affects the functioning of
ribosomes
mitochondria
cell membrane
lysosomes
- 11. Multiple ChoicePassive transport requires noconcentration gradientsosmosismotionenergy
- 12. Multiple Choice
Which type of Passive transport uses the help of a transport protein?
Osmosis
Facilitated diffusion
Simple diffusion
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