1. What does the tubing represent?

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1. What does the tubing represent?
Cell membrane
2. What is inside the tubing?
Starch glucose
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3. What did we add to make the liquid outside the
cell amber colored?
Starch indicator (iodine)
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4. Why does the inside of the cell turn purple
or black?
High s.i.conc.
Low s.i. conc.
Starch indicator diffused into the tubing
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5. How do we know that starch did not move from
the inside to the outside?
No color change outside
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6. How can we find out if glucose moved into the
beaker?
?
Glucose (high conc.)
Do a glucose indicator test using the fluid in
the beaker
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7. After placing 10 drops of the amber solution
into a test tube, what do we add to it?
Glucose indicator
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8. After adding the glucose indicator solution
(blue) what do we do with the test tube?
Heat it
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9. If there is glucose in the solution, what will
happen to the blue color after heating the tube
for 2 minutes?
The color changes
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10. The blue color changed to orange. This means
that what substance is in the test tube?
glucose
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starch
C6H12O6
glucose
11. Glucose indicator solution was added to these
test tubes, and then the tubes were heated. Which
will change color?
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Were you right?