Active Transport - Chapter 3.5
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by Kathy Egbert
| 15 Questions
Cells use energy to transport materials that cannot diffuse across a membrane. Active Transport video (abt 4 mins)
1
1
Review: Passive Transport includes 1) simple diffusion, 2) facilitated diffusion, and 3) osmosis.
True
False
2
1
Active transport is different than simple diffusion
A because it moves molecules down a concentration gradient.
B because it moves molecules against a concentration gradient.
3
1
Active transport is also different than simple diffusion
A because it requires energy to move particles across a cell membrane.
B because it doesn't require energy to move particles across a cell membrane.
4
1
Active transport uses energy from the breakdown of ATP.
True
False
5
1
ATP stands for adenosine triphosphate. The "tri" means there are 3 phosphates in this molecule.
True
False
6
1
Transport proteins share these common characteristics:
A Both span the cell membrane.
B Both change shape when they bind to target molecules.
C A and B are both correct.
7
1
There are two types of endocytosis
A simple diffusion and facilitated diffusion.
B phagocytosis and pinocytosis.
C diffusion and osmosis
8
1
The difference between phagocytosis and pinocytosis is that phagocytosis takes in liquids and pinocytosis takes in large solid particles.
True
False
9
1
A cell may transport a substance in a vesicle if the substance is too large to cross the membrane.
True
False
10
1
During endocytosis, the vesicle membrane fuses with a lysosome, and the membrane and it contents are broken down by lysosomal enzymes.
True
False
Practice: Go to classzone.com, Animations, Unit 2 Cells, Chapter 3, Get Through a Cell Membrane‚Äč; answer the questions below to demonstrate your success.

http://www.classzone.com/cz/books/bio_07/resources/htmls/animated_biology/unit2/bio_ch03_0093_ab_cellmem.html
11
1
What was needed to get sugar across the membrane?
A protein with channel
B vesicle
C vesicle and energy
D protein with channel and ATP energy
12
1
What was needed to get waste out of the cell (exocytosis)?
A vesicle
B protein with channel
C protein with channel and ATP
D nothing, it diffused across the membrane
13
1
What was required to get oxygen and water across the cell membrane?
A nothing, they are small enough to diffuse across the membrane without assistance or energy.
B vesicle
C protein with channel and ATP
D vesicle and ATP
14
1
What was needed to move charged ions across the cell membrane?
A protein with channel
B protein with channel and ATP
C vesicle
D vesicle with ATP
15
1
What was required to move proteins across the cell membrane?
A protein with channel
B protein with channel and ATP
C vesicle
If you want to see whether you understand this section completely, try the practice quiz at classzone.com for Chapter 3.5. It is under "Assessments".

http://www.classzone.com/cz/books/bio_07/quiz.htm?title=Section%20Quiz&ch=2&testId=18180
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