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Cell Membrane Part 2 Virtual Lab

Last updated over 7 years ago
14 questions
Note from the author:
A virtual lab looking at tonicity and active transport
Figure 5.12 Osmotic pressure changes the shape of red blood cells in hypertonic, isotonic, and hypotonic
solutions. (credit: Mariana Ruiz Villareal)
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Figure 5.16 Electrochemical gradients arise from the combined effects of concentration gradients and electrical
gradients. (credit: “Synaptitude”/Wikimedia Commons)
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Figure 5.19 An electrochemical gradient, created by primary active transport, can move other substances against
their concentration gradients, a process called co-transport or secondary active transport. (credit: modification of
work by Mariana Ruiz Villareal)
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1

What problem is faced by organisms that live in fresh
water?

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Active transport must function continuously because
__________.

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How does the sodium-potassium pump make the
interior of the cell negatively charged?

1

What is the combination of an electrical gradient and a
concentration gradient called?

1

What happens to the membrane of a vesicle after
exocytosis?

1

Which transport mechanism can bring whole cells into
a cell?

1

In what important way does receptor-mediated
endocytosis differ from phagocytosis?

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1

Where does the cell get energy for active transport
processes?

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