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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What is the role of NAD+ in the process of cellular respiration?
a. It functions as an electron carrier.
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c. It is the final electron acceptor for anaerobic respiration.
d. It is a nucleotide source for the synthesis of ATP.
Which process does not generate CO2?
A. the citric acid cycle
B. the conversion of pyruvate to lactic acid
C. the conversion of pyruvate to acetyl-CoA
D. the conversion of pyruvate to ethanol
What Is The Main Purpose Of Oxygen In Cellular Respiration?
A)Allowing For The Break Down Of Glucose In Pyruvate
B)Suppling Electrons To The Electron Transport Chain
C)Allowig For A Flow Of Electrons In The Electron Transport Chain
D)Oxidation Of Pyruvate To Acetyl COA
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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- Which molecule does not form during glycolysis? a. NADH c. oxygen (O2) b. pyruvate d. ATParrow_forwardWhat is the difference between cellular respiration and fermentation? Select an answer. a) cellular respiration does not need oxygen, while fermentation needs oxygen b) cellular respiration needs oxygen, while fermentation does not need oxygen c) cellular respiration produces very little energy, while fermentation produces a lot of energy d) Almost all cells carry out fermentation, while few carry out cellular respirationarrow_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_forward
- If you took a well-watered corn plant and placed it in a dark atmosphere of helium and carbon dioxide, which process could occur? A. light-dependent reactions B. light-independent reactions C. citric acid cycle D. pyruvate oxidationarrow_forwardWhich two processes lead directly to the production of large amounts of ATP by the enzyme ATP synthase? A. The electron transport chain B. Fermentation C. The Krebs cycle D. Glycolysis It needs two answer there can be two answer alsoarrow_forwardWhich process below produces 2 molecules of pyruvate and 2 molecules of ATP? A. Fermentation B. Kreb's Cycle C. Citric Acid Cycle D. Glycolsisarrow_forward
- What causes the suction on your thumb after the NaOH was added to the contents of the fermentation tube? Write two balanced chemical equations to support your answer describing the reactions that occur between the entrapped gas and NaOH.arrow_forwardWhich 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_forwardWhy 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 cellarrow_forward
- How are the NADPH and G3P molecules made during photosynthesis similar? a. They are both end products of photosynthesis. b. They are both substrates for photosynthesis. c. They are both produced from carbon dioxide. d. They both store energy in chemical bonds.arrow_forwardWhich process produces 32-36 ATP molecules? a Electron transport chain b Fermentation c Calvin Cycle d Glycolysisarrow_forwardWhat happens as electrons move down the electron transport chain? A. their energy is used to pump hydrogen ions across the mitochondrial inner membrane B. they produce carbon dioxide and water C. the electrons are combined with ADP and phosphate to form ATP D. their energy is used to pump sodium ions across the mitochondrial inner membranearrow_forward
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