Biology
11th Edition
ISBN: 9781259188138
Author: Peter H Raven, George B Johnson Professor, Kenneth A. Mason Dr. Ph.D., Jonathan Losos Dr., Susan Singer
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 8, Problem 8U
C4 plants initially fix carbon by
a. the same pathway as C3 plants, but they modify this product.
b. incorporating CO2 into oxaloacetate, which is converted to malate.
c. incorporating CO2 into citrate via the Krebs cycle.
d. incorporating CO2 into glucose via reverse glycolysis.
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Students have asked these similar questions
Looking at the image shown here, which of the following statements DOES NOT correctly identifies the location of metabolites related to photosynthesis and/or respiration in the
diagram of Chlamydomonas?
F
G
H
O A. Fermentation occurs in D.
B. Glyceraldehyde-3-phosphate (G3P) is generated in C.
O C. ATP can be found in D.
D. Pyruvate is generated in G.
O O O
W
hen a culture of Chlamydomonas is exposed to HIGH intensity light, the cells will display negative phototaxis and move away from the light.
Which of the following could act as a cellular signal triggering movement away from the light?
A.
Low levels of P700+ relative to P700 in the chloroplast.
B.
High levels of G3P in the cytosol.
C.
High levels of NAD+ relative to NADH in mitochondria.
D.
Low levels of ATP relative to ADP in the cytosol.
Glycolysis is often split up into three phases: 1. Energy Investment 2. Sugar Splitting and 3. Energy Payoff. During the Energy Investment Phase, 2 ATP are "spent" to generate Fructose 1,6 biphosphate and 2 ADP. What has happened to the terminal (third) phosphates in the 'spent" ATPs?
A. They are lost in the cytoplasm
B. They are transferred to the protein kinases
C. They are transferred, one by one, to the glucose molecule by kinases
D. They are lost as heat
E. All of the above
Chapter 8 Solutions
Biology
Ch. 8 - The light-dependent reactions of photosynthesis...Ch. 8 - Which region of a chloroplast is associated with...Ch. 8 - The colors of light that are most effective for...Ch. 8 - During noncyclic photosynthesis, photosystem I...Ch. 8 - How is a reaction center pigment in a photosystem...Ch. 8 - The ATP and NADPH from the light reactions are...Ch. 8 - The carbon fixation reaction converts a. inorganic...Ch. 8 - C4 plants initially fix carbon by a. the same...Ch. 8 - Prob. 1ACh. 8 - If you could measure pH within a chloroplast,...
Ch. 8 - Prob. 3ACh. 8 - If the Calvin cycle runs through six turns a. all...Ch. 8 - Prob. 5ACh. 8 - Given that the C4 pathway gets around the problems...Ch. 8 - If the thylakoid membrane became leaky to ions,...Ch. 8 - The overall process of photosynthesis a. results...Ch. 8 - Compare and contrast the fixation of carbon in C3,...Ch. 8 - Diagram the relationship between the reactants and...Ch. 8 - Do plant cells need mitochondria? Explain your...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- In which of the given steps of TCA cycle one C is lost from substrate in the form of CO2 as well as a molecule of NAD+ is reduced? a.Oxalosuccinic acid to a-ketoglutaric acid b.Isocitrate to oxalosuccinic acid c.Malic acid to oxaloacetic acid d.a-ketoglutaric acid to succinyl CoAarrow_forwardYou have discovered a novel peptide that, when administered to plant cells, spontaneously inserts into the thylakoid membranes and forms a channel that lets protons cross the membrane. You treat plant cells growing normally with your peptide. Which of the following statements correctly describes the effect on photosynthesis shortly after the addition of the peptide? Select all that are true. a. The rate of Glyceraldehyde 3-phosphate synthesis will decrease b. The rate of oxygen production will be unaffected c. The rate of Glyceraldehyde 3-phosphate synthesis will increase d. The rate of oxygen production will decrease e. The rate of oxygen production will increase f. The rate of Glyceraldehyde 3-phosphate synthesis will be unaffectedarrow_forwardDuring oxygenic photosynthesis in plants, the hydrogen atoms that end up in product carbohydratemolecules are coming from which of the following substrate molecules?A. water molecules (H2O)B. sucrose sugars (C12H22O11)C. carbon monoxide (CO)D. glucose sugars (C6H12O6)E. carbon dioxide (CO2)arrow_forward
- Plants are less susceptible to cyanide poisoning than animals because A. Plant ETC membranes are deficient in transporter proteins for the cyanide ion. B. The plant ETC has an alternative route for the reduction of oxygen that involves the “alternative oxidase” enzyme. C. Plants can rely on photosynthesis alone to generate proton gradients that are used to power secondary metabolic pathways. D. Plants utilize a pentose phosphate pathway to generate energy.arrow_forwardA. What is substrate level phosphorylation. B. Although oxygen does not participate directly in the citric acid cycle , the cycle only operates when oxygen is present. Why is this so so ? C.describe how hibernating animals and new born babies are able to keep warm without shivering. D. What is the metabolic purpose of hexose monophospate shunt pathway E.hg does G6PD deficient individuals have increase in resistance to malaria?arrow_forwardIn C3 plants CO2 is first incorporated into __________, whereas in C4 and CAM plants the CO2 is first incorporated into __________, and subsequently put into the Calvin cycle by Rubisco. a. 3-phosphoglycerate; oxaloacetate b. dihydroxyacetone phosphate; malate c. 3-phosphoglycerate; malate d. glyceraldehyde-3- phosphate; erythrose-4-phosphatearrow_forward
- If a plant is removed from its natural environment and exposed to 100 percent CO2 composed of the radioisotope 14C, which of the following will not occur? Select one: a. The rate of photorespiration will remain unchanged. b. The sugars synthesized by the plant will be radioactive. c. The oxygen released will also be radioactive. d. All the carbon molecules in the RuBP molecules will eventually become 14C. e. Rubisco will eventually contain 14C.arrow_forwardWhich of the following is NOT an example of anabolism? a. the TCA cycle b. glycolosis c. the reverse TCA cycle d. amino acid biosynthesis e. the Calvin cyclearrow_forwardGlycolysis is often split up into three phases: 1. Energy Investment 2. Sugar Splitting and 3. Energy Payoff. After splitting the 6-carbon sugar, Fructose 1,6-biphosphate, 4 ATP are generated by substrate-level phosphorylation. What is substrate-level phosphorylation? A. ATP generated by chemiosmosis B. ATP generated by the direct transfer of a phosphate from an organic molecule to ADP C. ATP generated by the fermentation of alcohol D. Transfer of phosphates between glucose molecules E. All of the abovearrow_forward
- Which of the following accessory pigments is the first e- acceptor in the electron transport chain? A. plastoquinone B. ferredoxin C. pheophytin D. plastocyaninarrow_forwardThe use of the C4 pathway for initial carbon fixation (CO2 into a 4C compound) I. occurs only in plants with specialized leaf anatomy containing bundle sheath cells surrounded by a ring of mesophyll cells II. occurs during the day in CAM plants III. reduces the problems of photorespiration by isolating the enzyme PEP carboxylase from high levels of dissolved O2 Select one: a. Only III is true b. Only I and III are true c. Only I is true d. Only I and II are true e. I, II and III are truearrow_forwardChlorella is a photosynthetic alga that is related to Chlamydomonas. However, unlike Chlamydomonas, Chlorella is exclusively autotrophic. In what ways are these two species biochemically different? A. Chlorella can generate more G3P in the light than Chlamydomonas can B. Only Chlamydomonas can respire in the dark as well as the light. C. Only Chlamydomonas can gain carbon in the dark. D. Only Chlamydomonas can metabolize glucose.arrow_forward
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