17. Three mutant strains of yeast each lacked a different respiratory enzyme and could not carry out specific metabolic reactions as shown below. Strain P- could not convert pyruvic acid to ethanol Strain Q-could not attach an acetyl group to CoA Strain R-could not form citric acid In which strains could Krebs cycle still occur? B. P only A. P and Q C. Q and R D. R only

17. Three mutant strains of yeast each lacked a different respiratory enzyme and could not carry out specific metabolic reactions as shown below. Strain P- could not convert pyruvic acid to ethanol Strain Q-could not attach an acetyl group to CoA Strain R-could not form citric acid In which strains could Krebs cycle still occur? B. P only A. P and Q C. Q and R D. R only

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter8: How Cells Make Atp: Energy-releasing Pathways

Section: Chapter Questions

Problem 2TYU: The reactions of _____ take place within the cytosol of eukaryotic cells. (a) glycolysis (b)...

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1. Boiling the solution (water + glucose + yeast + heat) had not impact on the ability of yeast to undergo fermentation. True or false? 2. The pH of the solution was acidic in the flasks in which fermentation occurred. True or false? 3. In the absence of oxygen, yeast cells can obtain energy by fermentation, resulting in the production of _______. A. ATP, carbon dioxide, and ethanol (ethyl alcohol) B. none of the above C. ATP, NADH, and water D. ATP and carbon dioxide
4. Anammox bacteria are known to obtain energy from the anaerobic autotrophic oxidation of one mole of NH4+ with N02- to form one mole of N2. (1) Develop an electron equivalent energy reaction for the anammox organisms. (2) Calculate ΔGr (kJ/1nol) for this reaction. (3) Calculate fs° for the anammox autotrophic reaction, assuming ε =0.4, N02- is the N source, inorganic carbon is the carbon source and Y is in g VSS/g N.
When deprived of oxygen, yeast cells obtain energy by fermentation, producing carbon dioxide, ATP, and (a) acetyl CoA (b) ethyl alcohol (c) lactate (d) pyruvate (e) citrate
The enzyme directly responsible for almost all carbon fixation on Earth is (a) rubisco (b) PEP carboxylase (c) ATP synthase (d) phosphofructokinase (e) maltase
Which of the following statements about the C4 cycle is incorrect? a. CO2 initially combines with PEP. b. PEP carboxylase catalyzes a reaction to produce oxaloacetate. c. Oxaloacetate transfers electrons from NADPH and is reduced to malate. d. Less ATP is used to run the C4 cycle than the C3 cycle. e. The cycle runs when O2 concentration is high.
The reactions of _____ take place within the cytosol of eukaryotic cells. (a) glycolysis (b) oxidation of pyruvate (c) the citric acid cycle (d) chemiosmosis (e) the electron transport chain
Which of the following metabolic pathways require(s) molecular oxygen (O2)? a. aerobic respiration b. lactate fermentation c. alcoholic fermentation d. all of the above
60.A mobile, lipid soluble carrier of TWO electrons present in chloroplasts is ___. Select one: a. cytochrome c b. Q c. plastocyanin d. PQB
1a) If E. coli can ferment lactose to form an acid and a gas, you expect the fermentation broth to be yellow and a bubble trapped in the Durham tube. a) True b) False 1b) What color would phenol red appear at pH 6.2? a) red b) orange c) yellow d) colorless
1.List 2 molecules that are produced by fermentation in yeast. 2.State the first law of thermodynamics, and explain how it relates to the study of life.
1. How would ATP production in an aerobic yeast culture change if we add the following metabolites or chemicals to the cultivation media? Explain why in each case by citing which enzyme(s) or process(es) would be affected.
6 If radio-labeled C-5 of glucose is used for glycolysis and alcoholic fermentation, which carbon in the final product(s) is labeled? Please explain the trace of the radio-labeled carbon in all the key steps (i.e. which carbon is labeled in FBP, DHAP/GAP, and pyruvate). Please answer the question by specifically stating which carbon is labeled in the final product and which carbon is labeled in each step. Thank You!