Concepts of Biology
1st Edition
ISBN: 9781938168116
Author: Samantha Fowler, Rebecca Roush, James Wise
Publisher: OpenStax College
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Textbook Question
Chapter 4, Problem 9RQ
What do the electrons added to NAD do?
a. They become part of a fermentation pathway.
b. They go to another pathway for ATP production.
c. They energize the entry of the acetyl group into the citric acid cycle.
d. They are converted into NADP.
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Which 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.
What 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.
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 4 Solutions
Concepts of Biology
Ch. 4 - Figure 4.6 Look at each of the processes shown and...Ch. 4 - Figure 4.15 Cyanide inhibits cytochrome c oxidase,...Ch. 4 - Figure 4.16 Tremetol, a metabolic poison found in...Ch. 4 - Which of the following is not an example of an...Ch. 4 - Which of the following is not true about enzymes?...Ch. 4 - Energy is stored long-term in the bonds of _____...Ch. 4 - The energy currency used by cells is _____. a. ATP...Ch. 4 - The glucose that enters the glycolysis pathway is...Ch. 4 - What do the electrons added to NAD do? a. They...Ch. 4 - Chemiosmosis involves a. the movement of electrons...
Ch. 4 - Which of the following fermentation methods can...Ch. 4 - The cholesterol synthesized by cells uses which...Ch. 4 - Beta oxidation is ______. a. the breakdown of...Ch. 4 - Does physical exercise to increase muscle mass...Ch. 4 - Explain in your own terms the difference between a...Ch. 4 - With regard to enzymes, why are vitamins and...Ch. 4 - Both prokaryotic and eukaryotic organisms carry...Ch. 4 - We inhale oxygen when we breathe and exhale carbon...Ch. 4 - When muscle cells run out of oxygen, what happens...Ch. 4 - Would you describe metabolic pathways as...
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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_forwardDuring 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 ATParrow_forwardWhat statement can you make after knowing that oxygen is NOT present in the plant cells? a. Alcoholic fermentation will occur. b. Pyruvate oxidation will proceed. c. Lactic acid fermentation will take place. d. Oxidative phosphorylation will occur.arrow_forward
- Which of the following statements concerning alcoholic fermentation is NOT true? a. It occurs under aerobic conditions in yeast. b. It converts pyruvate into ethanol and CO2. c. One molecule of NADH is consumed. d. It generates NAD+ for reuse by glycolysis.arrow_forwardWhat are NADH and FADH2? a. Oxidized coenzymes which carry electrons b. energy-producing organelles c. short-term, socially popular sources of hydrogen gas d. Reduced coenzymes which carry electronsarrow_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_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_forwardWhat is the role of NAD+ in the process of cellular respiration? a. It functions as an electron carrier. b. It functions as an enzyme. c. It is the final electron acceptor for anaerobic respiration. d. It is a nucleotide source for the synthesis of ATP.arrow_forwardWhich of these statements is true? a.Glycolysis is the process that builds glucose. b. Cellular respiration requires light to complete the process c. Lactic acid fermentation provides energy when oxygen is present. d. Carbon dioxide is produced during respiration.arrow_forward
- Which 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_forwardWhich of the following statements is correct? a. Glycolysis and Krebs cycle produce ATP in substrate level phosphorylation b. Glycolysis and Krebs cycle produce ATP in oxidative level phosphorylation. c. Glycolysis and pyruvate oxidation produce ATP in substrate level phosphorylation. d. Glycolysis and pyruvate oxidation produce ATP in oxidative level phosphorylation.arrow_forwardWhy is there a difference in the ATP that is being produced by the NADH molecule coming from Glycolysis which could be 4-6 for 2 NADH molecules? a.The conversion of reduction of NAD+ to NADH is a highly energetic process. b.Glycolysis uses 2 ATP for the production of NADH. c.NADH molecules from Glycolysis is not energetic enough to produce the 3 ATP. d.It will be dependent on the pathway that the NADH will be undergoing.arrow_forward
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