Name ________________________________________
Date _________________
Biology Keystone Exam Preparation
Photosynthesis
1. A biological process that occurs in plants is represented below.
Which row in the chart below identifies the lettered substances in the process?
A. Row 1
B. Row 2
C. Row 3
D. Row 4
2. Chlorophyll is a molecule shared by prokaryotes and eukaryotes in the process of
A. Cellular respiration
C. Protein synthesis
B. Photosynthesis
D. Polymerization
3. Which of the following best describes the flow of energy in cells?
A. Cell work → ATP→ Glucose
C. ATP → Glucose
B. Glucose → cell work
D. Glucose → ATP → cell work
4. The synthesis of carbohydrates occurs in the stroma of chloroplasts. This process uses
energy supplied by
A. ATP
B. CO2
C. PGAL
D. O2
5. Which phrase, if placed in box X, would correctly complete the flowchart shown
below?
A. Increased use of starch in root cells
B. Increased concentration of glucose
in leaf cells
C. Decreased ATP in root cells
D. Decreased concentration of
oxygen in leaf cells
6. Photosynthesis and cellular respiration are two major processes of carbon cycling in
living organisms. Which statement correctly describes one similarity between
photosynthesis and cellular respiration?
A. Both occur in animal and plant cells.
B. Both include reactions that transform energy.
C. Both convert light energy into chemical energy.
D. Both synthesize organic molecules as end products.
7. Use the diagrams below to answer the questions.
A. Complete the chart below by describing energy transformations involved in each
Process.
Process
Energy Transformations
Photosynthesis takes solar energy and converts it into
Photosynthesis
chemical (glucose) energy
Cellular Respiration
Cell Respiration takes the chemical energy in glucose and
uses it to make another type of chemical energy (ATP).
ATP is then used to do cellular work
B. Describe how energy transformations involved in photosynthesis are related to energy
transformations involved in cellular respiration.
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Photosynthesis and cell respiration are complimentary processes. The products of
photosynthesis are the reactants of respiration and the products of respiration are the reactants of
photosynthesis. (see diag. below)
Photosynthesis makes light energy accessible to organisms that can only complete respiration
through harnessing solar energy and converting it to high energy carbohydrates (glucose). Non
photosynthetic organisms can then take that glucose and make ATP to support their lives.
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Light
energ
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6 CO
+ 6
HO
CH O
Water
Glucose
+ 6
O
2
2
6 12 6
2
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Carbon
Oxygen gas
PHOTOSYNTHESIS
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