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BIOLOGY CUMULATIVE STUDY GUIDE QUESTIONS AND ANSWERS (with diagrams) A+ GRADED.
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BIOLOGY CUMULATIVE STUDY GUIDE QUESTIONS AND ANSWERS (with diagrams) A+ GRADED.
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BIOLOGY CUMULATIVE STUDY GUIDE QUESTIONS AND ANSWERS (withdiagrams) A+ GRADED.
1. What color do you obtain when iodine Dark purple to black
is added to starch?
2. amylase starch
3. bromelain collagen (protein)
4. lipase triglycerides (lipids)
5. In the "amylase experiment", tube #1 Iodine, amylase, starch
shows what is at the beginning of
the chemical reaction. When iodine is
added, the color is dark blue. What is
present in this tube?
6. In the "amylase experiment", tube Iodine, amylase, starch, disaccha-
#2 shows what is happening midway ride (simple sugar)
through the chemical reaction. When
iodine is added, the color is gray-pink
ish. What is present in this tube?
7. In the "amylase experiment", tube #3 Iodine, amylase, disaccharide (sim-
shows what is happening at the end ple sugar)
of the chemical reaction. When iodine
is added, the color is yellow. What is
present in this tube?
8. What happened to bromelain in the It was still present but inactive (de-
canned pineapple? naturation by high heat)
9. In the "milk experiment", why were the It is the optimal temperature of the
tubes placed at 37 degrees Celcius? enzyme
10. In the "milk experiment", you used a The enzymes broke down lipids into
pH indicator. Why did the tube con- glycerol and fatty acids, which made
taining the enzymes change color at the solution more acidic
the end of the experiment?
11. What usually denatures enzymes? - Very low pH
Select all that applies - Human body temperature
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, BIOLOGY CUMULATIVE STUDY GUIDE QUESTIONS AND ANSWERS (with
diagrams) A+ GRADED.
12. What colored light do photosynthet- All the colors but green
ic plants absorb during photosynthe-
sis?
13. Does the amount of light affect the yes
rate of photosynthesis?
14. Does the light color affect the rate of yes
photosynthesis?
15. What would be a great indicator of The production of O2 bubbles
photosynthetic action, if you want-
ed to observe photosynthesis in an
aquatic plant such as Elodea?
16. What is the technique used to sep- Chromatography
arate and identify pigments and oth-
er molecules from a cell extract that
contains a complex mixture of mole-
cules?
17. What would the Rf (Retention factor) It would be different
value of a pigment do, if a different
solvent was used?
18. Why do some leaves change color The chlorophyll molecule breaks
(red, yellow, orange, etc.) in the fall? down and other pigments now be-
come visible.
19. The chemical reactions of photosyn- Chloroplasts
thesis occur in which cellular or-
ganelle?
20. Chlorophyll is the main pigment for Beta carotene
photosynthesis.
What is another other type of pigment
found in photosystems?
21.
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