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Practice Final Exam A key.docx
Practice_Final_Exam_A_key.docx
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Practice Final Exam A key.docx-With enzymes Withou...
Practice_Final_Exam_A_key.docx-With enzymes Without enzymes Caramelized sucrose
Practice Final Exam A key.docx-With...
Practice_Final_Exam_A_key.docx-With enzymes Without enzymes Caramelized sucrose
Page 1
With enzymes Without enzymes
Caramelized sucrose concentraon (mg/L)
This is a practice exam for the Final Exam. Treat this exam like a real exam – put
everything away, set a timer for 45 minutes, and try your hardest. Once you are done,
check the answer key and your book and notes to help you understand what you
missed. Post questions on the Canvas discussion board or come to office hours if you
have more questions. Good luck!
1.
You are working at Dum-Dums for the summer making hard candy suckers. One day you
are making a batch of cherry suckers but you forget to add corn syrup to the batch. What
effect will this likely have on the final suckers?
A.
The
suckers
will
have sugar
crystals
in them
B.
The suckers will not have any sugar crystals in them
2. You want to make a sugar candy that has relatively few crystals, but you want them to be
big. What can you do to achieve this goal?
A.
Stir the cooled syrup extensively
B.
Add lots of invert sugar to the syrup
C.
Sprinkle lots of flour dust particles into
the syrup
D.
Place
a single cool
metal
spoon
in the syrup
3. What do you need to do to caramelize sucrose?
A.
Heat sucrose in the presence of amino acids
B.
Heat sucrose in the presence of fatty
acids
C.
Just
heat
sucrose
–
nothing
else
is
required
4. A study was done in which researchers caramelized
sucrose and then fed it to yeast cells and counted how
many yeast cells were still alive after a few days. In
some cases, they also added enzymes that break down
all caramelization byproducts into simpler molecules
that are known not to be dangerous. Based on the data
in the figure at the right, does caramelized sucrose
negatively affect the health of yeast cells?
A.
Yes
B.
No
5.
Your friend is making some salsa in preparation for March Madness this week (Rip ‘em
Eaters! Down with Louisville! Zot Zot Zot!!!). He made three batches, one using only the
seeds from jalapeños, one using only the flesh, and one using only the pith. Which batch of
salsa will taste the hottest?
A.
The one with the flesh only
B.
The
one
with
the pith
only
C.
The one with the seeds only
Page 2
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Santa Clara University
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