BIOL 1406 - Ott-Reeves - Test 3 - Blinn
College Exam Questions with 100%
Correct Answers | Graded A+
What are stomata? - ✔✔Adjustable pores on a leaf that allow CO2 to enter and
O2 and water to exit
Chlorophyll a is - ✔✔raised to an excited state after absorbing light energy.
Glyceraldehyde 3-phosphate (G3P) - ✔✔is converted to glucose in the
chloroplast and cytosol.
Which type of plant increases the concentration of CO2 prior to carbon fixation
by rubisco? - ✔✔C4
Which is a metabolic pathway that links the Calvin cycle to amino acid
biosynthesis? - ✔✔G3P → glycolysis → acetyl CoA → citric acid cycle → α-
ketoglutarate → amino acids
If stomata on a plant leaf close, then - ✔✔photosynthesis rates decrease.
The most important wavelengths of light for photosynthesis are - ✔✔the visible
wavelengths between 400 and 525 nm and between 600 and 700 nm.
Which enzyme catalyzes the first step in the Calvin cycle? - ✔✔Rubisco
Corn, Bermuda grass, and sugarcane are examples of - ✔✔C4 plants.
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, Metabolic pathways are somewhat like roadways: A metabolic path may be
one-way or two-way. It may contain intersections that connect many different
pathways, or it may be isolated, with a dead end, and only connect to one other
pathway. What roadway analogy could be used to describe the location of
glyceraldehyde 3-phosphate (product of the Calvin cycle) in plant cell
metabolism? - ✔✔At the intersection of several busy superhighways
Which substance has not been identified as an electron donor in various
organisms that carry out either oxygenic or anoxygenic photosynthesis? -
✔✔Carbon Dioxide
When a photon meets a molecule, which of the following cannot happen? -
✔✔The photon may lower the ground state of the absorbing molecule.
Which statement about rubisco is true? - ✔✔It generates a six-carbon molecule
that splits into two molecules of 3PG.
Which pair of conditions could be written into the diagram in place of
conditions A and B? - ✔✔A = cool, moist with a high ratio of CO2 to O2; B = hot,
dry with a low ratio of CO2 to O2
Which reaction taking place in a chloroplast directly depends on light? - ✔✔A
reaction action producing oxygen
2|Page
©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025.
College Exam Questions with 100%
Correct Answers | Graded A+
What are stomata? - ✔✔Adjustable pores on a leaf that allow CO2 to enter and
O2 and water to exit
Chlorophyll a is - ✔✔raised to an excited state after absorbing light energy.
Glyceraldehyde 3-phosphate (G3P) - ✔✔is converted to glucose in the
chloroplast and cytosol.
Which type of plant increases the concentration of CO2 prior to carbon fixation
by rubisco? - ✔✔C4
Which is a metabolic pathway that links the Calvin cycle to amino acid
biosynthesis? - ✔✔G3P → glycolysis → acetyl CoA → citric acid cycle → α-
ketoglutarate → amino acids
If stomata on a plant leaf close, then - ✔✔photosynthesis rates decrease.
The most important wavelengths of light for photosynthesis are - ✔✔the visible
wavelengths between 400 and 525 nm and between 600 and 700 nm.
Which enzyme catalyzes the first step in the Calvin cycle? - ✔✔Rubisco
Corn, Bermuda grass, and sugarcane are examples of - ✔✔C4 plants.
1|Page
©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025.
, Metabolic pathways are somewhat like roadways: A metabolic path may be
one-way or two-way. It may contain intersections that connect many different
pathways, or it may be isolated, with a dead end, and only connect to one other
pathway. What roadway analogy could be used to describe the location of
glyceraldehyde 3-phosphate (product of the Calvin cycle) in plant cell
metabolism? - ✔✔At the intersection of several busy superhighways
Which substance has not been identified as an electron donor in various
organisms that carry out either oxygenic or anoxygenic photosynthesis? -
✔✔Carbon Dioxide
When a photon meets a molecule, which of the following cannot happen? -
✔✔The photon may lower the ground state of the absorbing molecule.
Which statement about rubisco is true? - ✔✔It generates a six-carbon molecule
that splits into two molecules of 3PG.
Which pair of conditions could be written into the diagram in place of
conditions A and B? - ✔✔A = cool, moist with a high ratio of CO2 to O2; B = hot,
dry with a low ratio of CO2 to O2
Which reaction taking place in a chloroplast directly depends on light? - ✔✔A
reaction action producing oxygen
2|Page
©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025.
