AP BIO - Photosynthesis Exam Review
Authored by Erin Janak
Biology
12th Grade
NGSS covered
Used 11+ times
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This quiz covers photosynthesis at an Advanced Placement Biology level, designed for 12th-grade students preparing for the AP Biology exam. The questions assess deep understanding of both the light-dependent reactions and the Calvin cycle, requiring students to analyze experimental data, interpret graphs, trace molecular pathways, and understand the biochemical mechanisms underlying photosynthesis. Students need mastery of complex concepts including the splitting of water molecules during photolysis, the role of electron transport chains in generating ATP and NADPH, carbon fixation by RuBisCO enzyme, and the relationship between environmental factors like light intensity, temperature, and CO₂ concentration on photosynthetic rates. The quiz demands advanced analytical skills as students must interpret experimental results involving radioactive isotopes, analyze respirometry data, and draw conclusions from multi-variable graphs showing the interplay of limiting factors in photosynthesis. Created by Erin Janak, a Biology teacher in the US who teaches grade 12. This comprehensive exam review quiz provides excellent preparation for students approaching their AP Biology assessment, serving multiple instructional purposes throughout the photosynthesis unit. Teachers can deploy this quiz as a diagnostic tool to identify knowledge gaps before the AP exam, use individual questions as targeted practice for specific concepts like light reactions versus Calvin cycle processes, or assign it as homework to reinforce laboratory investigations involving photosynthetic rates and limiting factors. The quiz aligns with AP Biology Learning Objectives 2.4, 2.5, and 4.14, which address energy capture and transformation, photosynthetic processes, and the analysis of biological systems. The variety of question formats—from experimental analysis to direct concept identification—makes this resource ideal for formative assessment, allowing teachers to gauge student readiness for the rigorous analytical thinking required on the AP Biology exam while providing students with authentic practice in the types of complex, multi-step reasoning they will encounter on the actual assessment.
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An airtight, temperature-controlled glass box containing actively growing tomato plants was placed under a light source. Plastic wrapping that only transmits green light was placed over the box, and two days later air samples from inside the box were collected and analyzed. The most likely change in air quality is:
an increase in nitrogen (N2)
an increase in carbon dioxide (CO2)
an increase in oxygen (O2)
a decrease in carbon dioxide (CO2)
Tags
NGSS.HS-LS1-5
NGSS.HS-LS2-5
NGSS.HS-LS2-3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In photosynthesis, if the input water is labeled with a radioactive isotope of oxygen, 18O, then the oxygen gas released as the reaction proceeds is also labeled with 18O. Which of the following is the most likely explanation?
During the light reactions of photosynthesis, water is split, the hydrogen atoms combine with the CO2, and oxygen gas is released.
During the light reactions of photosynthesis, water is split, removing electrons and protons, and oxygen gas is released.
During the Calvin cycle, water is split, regenerating NADPH from NADP+, and oxygen gas is released.
During the Calvin cycle, water is split, the hydrogen atoms are added to intermediates of sugar synthesis, and oxygen gas is released.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The end products of the light-dependent reactions of photosynthesis are:
ADP, H2O, NADPH
ATP, CO2, H2O
CO2, H+, G3P
ADP, G3P, RuBP
ATP, NADPH, O2
Tags
NGSS.HS-LS1-5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Frogs of three different species are weighed and the amount of oxygen consumed by each species is determined by placing them in a respirometer for 1 hour. The results of this experiment are listed in the table.
From the information in the table, it is most reasonable to conclude that:
a. since all frogs respire through their skin, smaller frogs with smaller surface areas will consume less oxygen per gram of body weight than larger frogs with larger surface areas
a. frogs placed in a warm environment will respire more rapidly than frogs placed in a colder environment
a. each species of frog has its own unique rate of respiration
a. the amount of oxygen consumed per gram of body weight for each species is the same
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following enzymes is responsible for CO2 fixation in C3 plants?
succinate dehydrogenase
RuBP carboxylase (RuBisCO)
hexokinase
amylase
DNA polymerase
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The graph shows the relationship of photosynthetic rate and irradiance (light intensity) influenced by both temperature and carbon dioxide level.
According to the graph, the greatest rate of photosynthesis occurs when CO2 is present at:
high concentrations and low temperatures
low concentrations and high temperatures
high concentration and low irradiance levels
high concentrations and high irradiance levels
Tags
NGSS.HS-LS1-5
NGSS.HS-LS2-5
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The graph shows the relationship of photosynthetic rate and irradiance (light intensity) influenced by both temperature and carbon dioxide level.
From the data in the graph, which of the following conclusions is most reasonable?
The rate of photosynthesis is inversely proportional to light intensity.
The rate of photosynthesis at 660 ppm CO2 is more dependent on temperature than the rate at 330 ppm CO2.
There is no theoretical maximum for the rate of photosynthesis.
Attempts to increase the photosynthetic yield in field crops should involve the lowering of CO2 levels.
Tags
NGSS.HS-LS1-5
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