1. Which one of the following shows the correct sequence of energy transitions during chemiosmosis?
A. NADH → electron acceptors → proton gradient → ATP synthase → ATP
B. NADH → NAD+ → FADH2 → electron acceptors → ATP
C. carbohydrates → acetyl CoA → CO2 → proton gradient → ATP
D. NAD+ → NADH → protons → ADP → ATP
E. glucose → pyruvate → acetyl CoA → NADH → ATP
2. Facultative anaerobes:
A. prefer carbon dioxide.
B. must have oxygen.
C. must have carbon dioxide.
D. prefer oxygen.
E. are killed by oxygen.
3. When Fe3+ is used instead of O2 as the terminal electron acceptor in mitochondria:
A. all the other answers are correct.
B. less energy is gained for ATP production.
C. less energy is transferred to the proton gradient.
D. less ATP is produced.
E. less energy is gained for chemiosmosis.
solution:-
The correct answers are as follows:-
QNO1;-
The correct answer for this question is option (A).
NADH acts as an electron donor, these electrons are carried by the electron carriers which is coupled with the generation of the proton gradient. Protons move back into the matrix through ATP synthase complex generating ATP into the martrix.
QNO2;-
The correct answer for this question is option (D). Although facultative anaerobes can grow with and without oxygen, but the still prefer to grow in oxygen rich conditions, this is because aerobic respiration produces more ATP.
QNO3:-
the correct option for this question is option (A) which is all the other answers are correct.
1. Which one of the following shows the correct sequence of energy transitions during chemiosmosis? A....
1. Which one of the following shows the correct sequence of energy transitions during chemiosmosis? A. NADH → electron acceptors → proton gradient → ATP synthase → ATP B. NADH → NAD+ → FADH2 → electron acceptors → ATP C. carbohydrates → acetyl CoA → CO2 → proton gradient → ATP D. NAD+ → NADH → protons → ADP → ATP E. glucose → pyruvate → acetyl CoA → NADH → ATP 2. Facultative anaerobes: A. prefer carbon dioxide. B....
15. Draw out the Cell respiration pathway, include: stage locations Glucose Pyruvic acid Acetyl COA Oxygen Water Carbon dioxide NAD+/NADH FAD/FADH2 ADP + P ATP
27) Which one of the following best describes the electron transport chain? A) Electrons are passed from one carrier to another releasing a little energy at each B) Hydrogen atoms are added to CO2 to make an energy-rich compound. C) Electrons are pumped across a membrane by active transport. D) Glucose is broken down to a three-carbon compound 28) After completion of the citric acid cycle, most of the usable energy from the one molecule is in the form of...
just checking my answers, except for number 10. The common molecule produced from all foods at the second stage of catabolism is A) ADP. B acetyl-CoA. C) glucose. D) citric acid. Which group of compounds includes only low-energy molecules? 1. 2. Hih A)ATP; acetyl-CoA; NADH; FADH2 C) ADP: CO2; NADH; FADH2 DONO BADP: acetyl-CoA; NAD+:FAD-mau ADP: CO2: NAD+, FAD After O2 has been reduced in the electron transport chain, the oxygen atoms are part of what molecules? A) ATP 3....
Question 12 1 pts From your General Cell Biology knowledge, what biological process occurs in/on cristae? Glycolysis Calvin Cycle Cellular respiration TCA cycle DQuestion 13 1 pts From your General Cell Biology knowledge, what is cellular respiration? O The energy stored in the proton electrochemical gradient is harnessed by a proton channel that uses the energy released to turn the ATP synthase to power the synthesis of ATP. Glucose is metabolized to pyruvate with the formation of reduced intermediates, NADH,...
Which two processes make up oxidative phosphorylation? A. Chemiosmosis and ATP synthesis B. Electron transport chain and chemiosmosis C. Pyruvate oxidation and electron transport chain D. Proton motive force and chemiosmosis What is the final electron acceptor in the electron transport chain? A. FADH2 B. Water C. Oxygen D. NADH
is required to accept electron 17. At the very end of the electron transport chain in the mitochondria, final electron acceptor. A. carbon dioxide B. ADP C. ATP Synthase Doxygen E. NAD+ 18. Select the correct flow of energy transfer during cellular respiration. A. NADHH gradient glucose → ATP B glucose → NADH H gradient ATP C. glucose H gradient → NADH ATP D. glucose ATPH gradient → NADH 19. If a muscle cell has low levels of oxygen, which...
) the system's entropy D) the cell's energy equilibrium E) the heat content of a chemical system In the presence of oxygen, the three-carbon however, the pyruvate (1) loses a carbon, which is given off as a m compound called acetate, and (3) is bonded to coenzyme A. compound pyruvate can be catabolized in the citric acid cycle. First, olecule of CO2, (2) is oxidized to form a two-carbon 10) These three steps result in the formation of 10) A)...
1. Select the TRUE statement about the component of the electron transport chain. A. Complex III is a peripheral membrane protein B. Cytochrome c is a lipid-linked protein C. Complex II is a transmembrane protein D. Complex I is an integral membrane protein E. Complex IV is not a transmembrane protein 2. The rate of oxygen consumption at the inner mitochondrial membrane is related to all the following EXCEPT: A. Availability of ADP in the mitochondria B. The rate of...
Question 5 1 pts What is the main purpose of the Kreb's cycle (also known as the TCA or Citric Acid cycle) To produce ATP from the energy stored in acetyl-CoA To oxidize pyruvate and produce NAD and FADH2 To recycle NADH for use back in glycolysis To produce carbon dioxide by the reduction of pyruvate To produce NADH/FADH2 from the oxidation of acetyl-CoA