Plant Physiology - Photosynthesis Questions and Answers
Biology
Plant Physiology - PhotosynthesisThe light independent reaction of photosynthesis is also calle a the Calvin Cycle b cellular respiration c the Citric Acid Cycle d a photosystem
Biology
Plant Physiology - Photosynthesis4 Mitochondria is to cellular respiration as a cytoplasm b stomata c chloroplast d stroma is to photosynthesi
Biology
Plant Physiology - PhotosynthesisWhich of the following statements is false concerning photosynthesizers O They contain pigments O They obtain energy from the sun O They convert CO2 to glucose O Only eukaryotes can photosynthesize
Biology
Plant Physiology - PhotosynthesisDuring the light reactions of photosynthesis
carbon dioxide is converted into glucose
ATP is broken down into ADP and Pi
ATP and NADPH are made from ADP, Pi and NADP+
glucose is broken down into pyruvate and carbon dioxide
chemical energy is converted into green light
Biology
Plant Physiology - PhotosynthesisBeta subunit of ATP synthase is currently in its loose state. At what phase of ATP synthesis is it at? ATP is trapped within the subunit unable to escape ADP and inorganic phosphate react with each other ATP is released by the subunit ADP and inorganic phosphate are trapped within the subunit but do not react with each other
Biology
Plant Physiology - PhotosynthesisWhat was one positive effect of the Oil Embargo?
A. Americans exponentially increased their energy use.
B. Americans decided to never import oil.
C. Americans chose to drive LESS energy efficient vehicles.
D. Americans began to use energy more efficiently. 14
Biology
Plant Physiology - Photosynthesis6CO2 + 6H₂O C6H12O6 + 602 Photosynthesis produces oxygen and glucose. Which of these products is needed by plants?
Glucose
Oxygen
Biology
Plant Physiology - PhotosynthesisIn general, the citric acid cycle is ____________ when the cell
needs lots of energy.
avoided
stimulated
inhibited
Ounaffected
Biology
Plant Physiology - PhotosynthesisMake me a cartoon/comic strip. use text and images to follow the path of a photon of light energy, and a molecule of carbon dioxide. Show me how they come together and are used in photosynthesis. Your comic should explain the journey of the photon and its role in linear electron flow. It should also explain what happens to the carbon dioxide molecule during the Calvin cycle.
Biology
Plant Physiology - Photosynthesisplants encounter a problem when
a. the environment becomes too cool and the stomata close to retain heat
b. the temperature of the air rises above 28°C and the stomata open to air out the spaces in the leaves
c. the temperature of the air rises above 28°C and the stomata close to conserve water, which prevents carbon dioxide from entering the air spaces in the leaf.
d. the temperature of the air falls below 28°C, which causes chemical reactions to slow down
e. the moisture in the air increases and too much water enters the leaf, preventing the oxygen from escaping
Biology
Plant Physiology - PhotosynthesisA savings account is used to save money for use at a later date. The account owner, deposits money in the account when they have money that is not needed immediately, and they can withdraw money for use a sometime in the future. If the flow of energy through photosynthesis and respiration were compared to maintaining a savings account, which would be accurate?
Both photosynthesis and respiration are like making an energy deposit.
Both photosynthesis and respiration are like making an energy withdrawal
Photosynthesis is like making an energy deposit, and respiration is like making an energy
withdrawal.
Photosynthesis is like making an energy withdrawal, and respiration is like making an energy
deposit.
Biology
Plant Physiology - PhotosynthesisA bacterium that you isolated from pond water appears to use light for energy. Based upon this information, you inoculate the organism into fresh
media, infused with lots of carbon dioxide. Even after incubation at the correct temperature (of pond water), the organism is not growing. Your best
explanation of what might have happened is
Select one:
a. there was no sulfur compound added to the medium, that could be used as an electron donor.
b. no oxygen was added to the medium so the organism died.
c. there is some inhibitory chemical that is preventing the growth of the bacterium.
d. you were using the wrong type of sunlight as the energy source for the bacterium,
Biology
Plant Physiology - PhotosynthesisWhich of the following statements regarding photosynthesis is CORRECT?
Grasses such as corn and sugercane use CAM photosynthesis
In photorespiration, the enzyme aldolase reacts with CO instead of 02
C4 plants divide the reactons of photosynthesis into 2 different cells
C3 plants divide the reactions of photosynthesis between night and day
C3 plants are adpated to thrive in the hot/dry climates of deserts
Biology
Plant Physiology - PhotosynthesisIn both chlorophyll (a) and chlorophyll (b), the co-factor metal ions in the porphyrin rings are:
1. Iron (III) and Magnesium (II)
2. Iron (II) and Iron (III).
3. Magnesium (II) and Magnesium (II).
4. No metal ions are there in chlorophyll.
5. None of the above.
Biology
Plant Physiology - PhotosynthesisWhat is the purpose of photosynthesis?
To oxidize glucose and transfer the stored
chemical energy into ATP for the cells to
To create ATP using energy from the sun to power the plant use
To absorb energy from the sun and transfer the energy to electrons
To capture energy from the sun and convert it into stored chemical energy in glucose.
Biology
Plant Physiology - PhotosynthesisScientists were studying a new mutant version of sugarcane (a C4 plant) that has a non-functioning PEP carboxylase enzyme. Describe some problems that this plant might encounter on hot, sunny days. (4 C)
Biology
Plant Physiology - PhotosynthesisFollow the path of an electron from a molecule of water to the sugar G3P.
water - PSII - ETC - PSI - NADPH - G3P
water - PSII ETC PSI NADPH - ATP - G3P
water - PSI - ETC - PSII - NADPH - G3P
PSII - water - ETC - PSI - NADPH - G3P
Biology
Plant Physiology - PhotosynthesisWhat increases the amount of H+ (protons) in the thylakoid lumen? (select all that apply)
sunlight
splitting of water
transport via the cytochrome complex
production of ATP
the influx of CO2
Biology
Plant Physiology - PhotosynthesisWhich statement about the Calvin-Benson cycle is incorrect?
Rubisco catalyzes the reaction between CO2 and RuBP
For each turn of the Calvin-Benson cycle, only 2 molecules of G3P go on to
make glucose
6 RuBP is reformed by 10 G3P molecules
ATP and NADPH form when 3PG is reduced
Biology
Plant Physiology - PhotosynthesisIn the chloroplast
Light leads to the pumping of protons out of the thylakoid space into the stroma
Light causes the stroma to become more acidic than the thylakoids
ATP forms when protons are pumped into the thylakoid space
Protons return passively down their [gradient) to the stroma via protein channels
Biology
Plant Physiology - PhotosynthesisWhat do thylakoid membrane and inner mitochondrial membrane have in common?
photosystem II
two choices are correct
ATP synthase
3 proton pumps that move H* against their concentration gradient
Biology
Plant Physiology - PhotosynthesisWhich 2 environmental variables may affect this floating leaf disk experiment?
temperature of room; amount of bicarbonate in the syringes.
amount of bicarbonate in the syringes; age of leaf
temperature of room; amount of light in room
age of leaf; amount of light in room
Biology
Plant Physiology - PhotosynthesisThe negative control in the graph is
the white light line showing the most activity
the red and blue light lines showing chlorophyll a and b activity
the green light line showing no chlorophyll a and b activity
the no light line showing the critical component, light, is missing
Biology
Plant Physiology - PhotosynthesisIn the 1660s, Flemish physician Jan van Helmont grew a small willow tree in a pot of soil. He added only water to the pot. At the end of five years, he found that the tree had gained 75 kilograms, but there was ver little change in the mass of the soil. Van Helmont concluded that the plant gained weight directly from the water. We now know that this conclusion is only partially correct because, in addition to water, photosynthes also requires
(A) oxygen from the atmosphere
(B) proteins from animal prey
(C) carbon dioxide from the atmosphere
(D) carbohydrates from the soil
Biology
Plant Physiology - PhotosynthesisYou have recently been hired as the new Hydrology Professor at Elk Neck State College. You are the Lead Hydrologist. Your job is to create an informational flyer/poster/etcetera on the properties of water and their importance to present to the community. You need to have all of the properties with explanations, examples, and pics of each. Submit to Schoology when complete. You can use your online text and other resources as needed.
Capillary action I
Surface tension
Cohesion
Adhesion
High heat of vaporization
Polarity
Density
High Heat Capacity-resists temperature change
Biology
Plant Physiology - PhotosynthesisWhile screening the effects of various compounds on plant cells, you identify a molecule that severely
reduces ATP production during photosynthesis, but has no effect on the reduction of NADP+ to NADPH.
What is the most likely activity of this molecule in the chloroplast?
Biology
Plant Physiology - PhotosynthesisExplain why pheophytins are likely show up on chromatograms of frozen spinach, but rarely in a paper chromatogram of fresh spinach, while chlorophylls show up on paper chromatograms of both frozen and fresh spinach. Although "Pheophytins are present in frozen spinach and not in fresh spinach" is a correct statement, it does not answer the question and will not get any points. You may want to use chlorophyll a and pheophytin a as an example. Compare their structures, re- read the "Natural food coloring and spinach pigments" section in this handout and use this information to answer the question.
Biology
Plant Physiology - PhotosynthesisWhich of the following will increase plant growth?
carbon dioxide levels above normal
below normal water levels
depleted soll nutrients
decreased light Intensity
Biology
Plant Physiology - PhotosynthesisWhich process is most directly driven by light energy?
creation of a pH gradientby pumping protons across the thylakoid membrane
ATP synthesis
transfer of energy from pigment molecule to pigment molecule
reduction of NADP+ to NADPH
Biology
Plant Physiology - PhotosynthesisConsider the following facts: Rubisco can bind with both CO2 and 02. Rubisco will bind with oxygen if the oxygen concentration is too high. In C4 plants, rubisco is protected from high oxygen concentration caused by closed stomata by a layer of mesophyll cells. What happens to carbohydrate production in C3 plants if water is limited and stomata must close? Relate this to the fact that C3 plants are adapted to cooler temperatures than C4 plants.
Biology
Plant Physiology - PhotosynthesisStudents are studying the process of photosynthesis in plants. Which of the following is a product of photosynthesis?
A. carbon dioxide
B. nitrogen
C. sodium chloride
D. sugar
Biology
Plant Physiology - PhotosynthesisPhotosynthesis and cellular respiration are complementary, as the byproducts of one are the the other. of
A. produced
B. modified
C. products
D. reactants
Biology
Plant Physiology - PhotosynthesisHow many net GTPs+ATPs are formed via the citric acid cycle from pyruvate that is produced from the glycolytic metabolism of one molecule of glucose?
Biology
Plant Physiology - PhotosynthesisThe light reactions of
photosynthesis take
place in the
A. intermembrane space.
B. lumen of the cholorplast.
C. thylakoid membrane.
D. cytosol of mitochondria.
Biology
Plant Physiology - PhotosynthesisWhich of the following
structures found in
autotrophs is the
closest analog to
mitochondria?
A. ATP synthase
B. Stroma
C. Golgi Apparatus
D. Chloroplasts
Biology
Plant Physiology - PhotosynthesisNoncyclic
photophosphorylation
only occurs in
A. Photosystem I
B. Photosystem II
C. cholorphyll
D. glycolysis
Biology
Plant Physiology - PhotosynthesisAbout 90% of all
energy produced by the
cell occurs through_____
A. Substrate phosphorylation
B. Glycolysis
C. Oxidative phosphorylation
D. Reductive phosphorylation
Biology
Plant Physiology - PhotosynthesisIf 10 W/m² impacts a surface and only 3 Wim² is reemitted back, what is the surface's albedo as a percent?
Biology
Plant Physiology - PhotosynthesisWhich of the five
pillars of Islam
became a catalyst for
change?
A. Daily prayer
B. Giving to the poor
C. The pilgrimage to Mecca
D. Submission to Allah
Biology
Plant Physiology - PhotosynthesisLight energy is mainly used to harvest electrons that are used to reduce [?] to NADPH for use in other reactions.
NAD+
NADP
NADP+
Biology
Plant Physiology - PhotosynthesisMany factors can influence the rate of photosynthesis as it is a(n) catalyzed reaction that has an optimal range.
A. heavy metal
B. channel protein
C. ATP
D. enzyme
Biology
Plant Physiology - PhotosynthesisWhich ONE of the following is primarily responsible for the number of ATPs made per H+ that cross the inner mitochondrial membrane by ATP synthase?
The F1 stator.
The reversibility of ATP synthase.
The ATP-ADP translocase.
The number of c subunits.
Biology
Plant Physiology - PhotosynthesisPhotosynthesis and cellular respiration are both_ catalyzed reactions.
A.aquaporin
B. protein
C.carbon
D. enzyme
Biology
Plant Physiology - Photosynthesis6CO₂ + 6H₂O → C6H12O6 + 60₂
The equation above indicates that glucose and [?] are products of photosynthesis.
A. CO2
B. C6H12O6
C. O2
Biology
Plant Physiology - PhotosynthesisThe chemical reaction for photosynthesis is the reverse of the chemical reaction for cellular respiration.
A. True
B. False
Biology
Plant Physiology - PhotosynthesisWhich structure is responsible for the initial physical movement of solar energy to chemical energy?
antenna proteins
reaction center
light-harvesting complex
chloroplasts
Biology
Plant Physiology - PhotosynthesisIf water could not be split, photosynthesis would stop because
A. water has a balancing effect in the plants chemistry that cannot be maintained without it
B. the oxygen molecule in water is required for the dark reactions.
C.water's "stolen" electron replace the one donated by the reaction center
D.water is the original source of the donated electron in the electron transport chain
Biology
Plant Physiology - PhotosynthesisIn the energy from sunlight is absorbed by chlorophyll and that energy is converted into stored chemical energy. In the the chemical energy harvested during the light-dependent reactions drives the assembly of sugar molecules from carbon
Biology
Plant Physiology - PhotosynthesisThe function of mitochondria and chloroplasts is related to energy. In what way does their function differ?
A. Mitochondria produce energy in prokaryotic cells, while chloroplasts produce energy in eukaryotic cells.
B. Mitochondria produce energy from food, while chloroplasts produce food from the Sun's energy.
C. In plants, mitochondria provide energy in non-green cells, while chloroplasts provide energy to cells in parts of the plant that
are green.
D. Mitochondria provide energy in the night, while chloroplasts provide energy in the day.
E.
Mitochondria provide energy from food synthesized by organelles other than chloroplasts, while chloroplasts provide energy
through photosynthesis using the Sun's energy.
Biology
Plant Physiology - PhotosynthesisSunlight is composed of energy that is visible to humans and energy that is not visible to humans. Which statement describes how the visible energy from the Sun is different from the nonvisible energy?
A. It travels at a different speed through space.
B. It travels a different distance through space.
C. It has different wavelengths.
D. It has different amplitudes.