BIOLOGY
4th Edition
ISBN: 9781266739606
Author: Hoefnagels
Publisher: MCG
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Chapter 6, Problem 7MCQ
Summary Introduction
Introduction:
Fermentation is an anaerobic process by which a cell produces energy by the breakdown of sugar in the absence of oxygen. It takes place in the bacteria, yeast and the cells that lack oxygen like during vigorous exercise. The glycolysis in fermentation produces two ATP, two NADH and two pyruvate molecules.
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During glycolysis, pyruvate oxidation, and the citric acid cycle, NADH is produced. The citric acid cycle also produces FADH2. What is the purpose of these molecules?
a. to produce carbon dioxide to breathe out
b. to produce oxygen that is needed for the electron transport chain
c. to carry electrons to the electron transport chain
d. to provide the ADP and phosphate that are needed to make ATP
Why is it important to regenerate NAD+ during fermentation?a. It helps maintain the reactions of glycolysis.b. So that it can transfer an electron to the electron transport chainc. To maintain the concentration of pyruvate in a celld. To produce alcohol or lactic acid for the cell
What is the main goal of lactic fermentation in humans especially during strenuous activity?
a.
Reduce FAD+ to FADH2
b.
Reduce pyruvate to lactate
c.
Oxidize NADH to NAD+
d.
Oxidize glucose to ethanol
Chapter 6 Solutions
BIOLOGY
Ch. 6.1 - Why do all organisms need ATP?Ch. 6.1 - What are the three general ways to generate ATP...Ch. 6.1 - Prob. 3MCCh. 6.1 - Prob. 4MCCh. 6.2 - Prob. 1MCCh. 6.2 - What occurs in each of the three stages of...Ch. 6.3 - Prob. 1MCCh. 6.3 - Prob. 2MCCh. 6.4 - Prob. 1MCCh. 6.4 - Prob. 2MC
Ch. 6.4 - Prob. 3MCCh. 6.5 - Prob. 1MCCh. 6.5 - Prob. 2MCCh. 6.5 - Prob. 3MCCh. 6.5 - Prob. 4MCCh. 6.6 - Prob. 1MCCh. 6.6 - How does the actual ATP yield compare to the...Ch. 6.7 - Prob. 1MCCh. 6.7 - Prob. 2MCCh. 6.8 - Prob. 1MCCh. 6.8 - Prob. 2MCCh. 6.8 - Prob. 3MCCh. 6.9 - Prob. 1MCCh. 6.9 - Why must the first metabolic pathways have been...Ch. 6.9 - What is the evidence that photosynthesis may have...Ch. 6.10 - What hypothesis were the researchers testing, and...Ch. 6.10 - Prob. 2MCCh. 6 - Which of the following best describes aerobic...Ch. 6 - Which stage in cellular respiration produces the...Ch. 6 - What is the role of ATP synthase? a. It uses ATP...Ch. 6 - Prob. 4MCQCh. 6 - Prob. 5MCQCh. 6 - Fats can be broken down into acetyl CoA for use in...Ch. 6 - Prob. 7MCQCh. 6 - What is endosymbiosis? a. A type of fermentation...Ch. 6 - Respiration contains the Latin word root spiro,...Ch. 6 - All steps of cellular respiration are closely...Ch. 6 - How does aerobic respiration yield so much ATP...Ch. 6 - How might a mitochondrion's double membrane make...Ch. 6 - Health-food stores sell a product called pyruvate...Ch. 6 - At what point does O2 enter the energy pathways of...Ch. 6 - Prob. 7WIOCh. 6 - Describe the energy pathways that are available...Ch. 6 - Prob. 9WIOCh. 6 - Describe how aerobic respiration occurs in...Ch. 6 - Explain the fact that species as diverse as humans...Ch. 6 - Prob. 12WIOCh. 6 - Prob. 1PITCh. 6 - Prob. 2PITCh. 6 - Prob. 3PITCh. 6 - Where would fermentation, anaerobic respiration,...
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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
- Which statement correctly describes carbon fixation? a. the conversion of CO2 to an organic compound b. the use of RUBISCO to form 3-PGA c. the production of carbohydrate molecules from G3P d. the formation of RuBP from G3P molecules e. the use of ATP and NADPH to reduce CO2arrow_forwardWhat is the importance of fermentation to cellular metabolism? a. It generates glucose for the cell in the absence of O2. b. It oxidizes NADH to NAD+ during electron transport. c. It oxidizes NADH to NAD+ in the absence of O2. d. It reduces NADH to NAD+ in the absence of O2.arrow_forwardWhich of these is incorrect regarding fermentation?a. There is a net gain of only two ATP per glucose.b. It occurs in the cytoplasm.c. The process starts with glucose entering glycolysis.d. NADH donates electrons to the electron transport chain.e. It is anaerobic.arrow_forward
- Which of these is not true of fermentation?a. There is a net gain of only two ATP per glucose.b. It occurs in cytoplasm.c. NADH donates electrons to the electron transport chain.d. It begins with glucose.e. It is carried on by yeast.arrow_forwardHow will the cell shift its metabolic processes in response to the level of pyruvate and in order to produce ATP? A. It will shift from aerobic respiration to fermentation B. It will shift from aerobic respiration to anaerobic respiration C.It will continue with aerobic metabolism using oxygen in the cytosol to make ATP D. It will shift from anaerobic respiration to fermentationarrow_forwardHow would a ubiquinone inhibitor directly affect the ATP yield? a. By increasing the electron transport rate to a fraction of 1/2 b. By limiting the hydrogen protons pumped to a fraction of 1/4 c. By pumping additional hydrogen protons to a fraction of 1/2 d. By disabling the entire electron transport chain and chemiosmotic systemarrow_forward
- Which statement is TRUE regarding the glycolytic pathway? a. It includes five phosphate transfer reactions. b. All of the enzymes that are regulated by product inhibition. c. It includes reactions catalyzed by three isomerase enzymes. d. All of the enzymes are regulated by high ATP concentratrionarrow_forwardWhich of the following number of products from the Krebs Cycle is a manifestation of 4 pyruvate molecules generated from glycolysis? A. 2 ATP, 6 NADH, 2 FADH₂ B. 3 ATP, 9 NADH, 3 FADH₂ C. 4 ATP, 4 NADH, 4 FADH₂ D. 4 ATP, 12 NADH, 4 FADH₂arrow_forwardIn chemiosmotic phosphorylation, what is the most direct source of energy that is used to convert ADP + Pi to ATP? A. No external source of energy is required because the reaction is exergonic. B. energy released from high energy electrons given by NADH and FADH2 C. energy released from ATP synthase pumping hydrogen ions from the mitochondrial matrix D. energy released as electrons flow through the electron transport system E. energy released from movement of protons through ATP synthase F. energy released from substrate-level phosphorylationarrow_forward
- Why cannot gluconeogenesis and glycolysis be active at the same time? a. False! Gluconeogenesis starts in mitochondria, glycolysis in cytoplasm, so they can be active at the same time! b. True! Gluconeogenesis and Glycolysis use the same reversible enzyme, so these enzymes cannot support both reactions. c. False! Gluconeogensis uses bypasses, so that's why both pathways can be active at the same time. d. True! Gluconeogensis makes glucose, glycolysis breaks glucose. The purpose of both enzymes is clearly opposed. e. False! Gluconeogenesis is in the liver, glycolysis is not - it's in the muscle, so a different organ.arrow_forwardDiscuss the relationship of a. anabolism to catabolism b. ATP to ADP c. glycolysis to fermentation d. electron transport to oxidative phosphorylationarrow_forwardWhich of the following is NOT similar in lactic acid fermentation and alcoholic fermentation? a. Total number of net ATP b. Oxidizing agent of NADH c. Number of NAD+ regenerated d. Steps in glycolysis to produce pyruvatearrow_forward
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