Please do not start this until we discuss it in class. This will be graded on correctness and you should work independently (not with anyone else). If you have questions please reach out to me.
Question 1
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Question 2
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Question 3
3.
Question 4
4.
Question 5
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Question 6
6.
Question 7
7.
Use the image below to answer the remainder of the questions.
Note:
CO2 = small and non-polar
Salt = small and charged/polar
Starch = large and polar
Sucrose = large and polar
Question 8
8.
Question 9
9.
Question 10
10.
Question 11
11.
Question 12
12.
Question 13
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Question 14
14.
Question 15
15.
Question 16
16.
Question 17
17.
Question 18
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Question 19
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Question 20
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Question 21
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Question 22
22.
The molecule that is both hydrophobic and hydrophilic and makes up membranes is a ...
Steroid
Carbohydrate
Phospholipid
Starch
What other biomolecule is found in the membrane of cells that helps with membrane transport?
DNA
Proteins
Nucleotides
Which of the following requires energy to occur? Select all that apply.
Simple diffusion
Osmosis
Endocytosis
"Regular" active transport
Facilitated diffusion
Exocytosis
This image is illustrating ...
Simple diffusion
Osmosis
Endocytosis
"Regular" active transport
Facilitated diffusion
Exocytosis
Does this type of transport require energy?
Yes
No
This image is illustrating ...
Simple diffusion
Osmosis
Endocytosis
"Regular" active transport
Facilitated diffusion
Exocytosis
Does this type of transport require energy?
Yes
No
The inside of the cell is _______ for carbon dioxide in comparison to the outside.
Hypertonic
Hypotonic
Isotonic
If carbon dioxide can move through the membrane without a membrane protein, where would the carbon dioxide move?
Inside the cell
Outside the cell
The carbon dioxide would not move
This type of movement is known as ...
Simple diffusion
Osmosis
Endocytosis
"Regular" active transport
Facilitated diffusion
Exocytosis
The carbon dioxide does not move across the membrane
Would this movement require energy?
Yes
No
The carbon dioxide does not move across the membrane
Would all of the carbon dioxide move across the membrane?
Yes
No
The carbon dioxide does not move across the membrane
The outside of the cell is _____ for starch in comparison to the inside.
Hypertonic
Hypotonic
Isotonic
If starch is too large to move across the membrane without a channel protein, but one is present in the membrane, where would the starch move?
Inside the cell
Outside the cell
The starch would not move
Would this movement require energy?
Yes
No
The starch would not move
This type of movement is known as ...
Simple diffusion
Osmosis
Endocytosis
"Regular" active transport
Facilitated diffusion
Exocytosis
The starch would not move
The outside of the cell is ______ for salt in comparison to the inside.
Hypertonic
Hypotonic
Isotonic
Assume that salt cannot move across the membrane without a membrane protein and there is no membrane protein for salt present. Where would the salt move?
Inside the cell
Outside the cell
The salt would not move
Given the previous answer, what might move across the membrane?
Salt
Water
Nothing
Where would the molecule from the previous question move?
Inside the cell
Outside the cell
Nothing would move
What might happen to the shape of the cell given the previous answer?
It would swell
It would shrink
Nothing
Assume the following:
- Sucrose is too large/polar to move through the membrane
- There is no protein channel for sucrose
- There are protein channels for fructose and glucose
- there is sucrase (an enzyme that breaks down sucrose) inside of the cell
What would happen?
Take a minute to think about this answer (don't rush through it) - maybe you can draw this out to help.
The sucrose would not be able to cross the membrane and would not break down so nothing would happen
The sucrose would not be able to cross the membrane and would not break down so the sucrose wouldn't move but the water would move into the cell to dilute the sucrose
The enzyme sucrase would break down the sucrose into glucose and fructose. The high concentration of glucose and fructose inside the cell would then cause the glucose and fructose to move through facilitated diffusion out of the cell until they reach dynamic equilibrium
The enzyme sucrase would break down the sucrose into glucose and fructose. The high concentration of glucose and fructose inside the cell would then cause the glucose and fructose to move through facilitated diffusion inside of the cell until they reach dynamic equilibrium
