Test
The chart below shows data on photosynthesis
in one type of plant. Use the chart and your
knowledge of science to answer questions 1–3.
1.Which statement is supported by the data?
A Photosynthesis does not occur at 0°C.
B The optimum temperature for photo-
synthesis is approximately 46°C.
CThe rate of photosynthesis at 40°C is
greater than the rate at 20°C.
DThe rate of photosynthesis increases as
temperature increases from 25°C to 30°C.2.At approximately what temperature is
the plant producing oxygen at the greatest
rate?
F 0°C H 46°C
G23°C J 50°C
3.Data obtained from a different type of
plant show a similar relationship between
rate of photosynthesis and temperature,
but the curve is shifted to the right. What
environment would this plant be best
adapted to?
A Cold subarctic environment
B Cool, wet environment
CMild, dry environment
DHot equatorial environmentCHAPTER 5 Review 113
TAKS Test PrepTAKS Test Prep
02030405010Rate of
photosynthesis
Temperature (°C)Effect of Temperature on PhotosynthesisCritical Thinking
- Distinguishing Relevant InformationThe
enzyme that aids in the conversion of pyru-
vate to acetyl-CoA requires vitamin B1, also
called thiamine.Thiamine is not made in
the human body. How would a deficiency of
thiamine in cells affect cellular respiration? - Evaluating ViewpointsState whether you
think the following viewpoint can be sup-
ported, and justify your answer. “If Earth’s
early atmosphere had been rich in oxygen,
photosynthetic organisms would not have
been able to evolve.” - Evaluating DifferencesCompare the
energy flow in photosynthesis to the energy
flow in cellular respiration. - Inferring RelationshipsHow might the
folding of the inner membrane of mito-
chondria affect the rate of aerobic
respiration? Explain your answer.
Alternative Assessment
- Analyzing MethodsResearch several ways
that fermentation is used in food prepara-
tion. Find out what kinds of microorganisms
are used in cultured dairy products, such as
yogurt, sour cream, and some cheeses.
Research the role of alcoholic fermentation
by yeast in bread making. Prepare an oral
report to summarize your findings. - Career ConnectionEnzymologistResearch
the educational background necessary to
become an enzymologist. List the courses
required, and describe additional degrees or
training that are recommended for this
career. Write a report on your findings. - Interactive Tutor Unit 2Photosynthesis,
Unit 3Cellular RespirationWrite a report
summarizing how exercise physiologists
regulate the diet and training of athletes.
Find out how diet varies according to the
needs of each athlete. Research the rela-
tionship between exercise and metabolism.
Before choosing an answer to a question, try to
answer the question without looking at the answer
choices on the test.9B2C13A2D3D