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NADH and FADH2 are both electron carriers that donate their electrons to the electron transport chain. The electrons ultimately reduce O2 to water in the final step of electron transport. However, the amount of ATP made by electrons from an NADH molecule is greater than the amount made by electrons from an FADH2 molecule. Which statement best explains why more ATP is made per molecule of NADH than per molecule of FADH2? a) The H+ gradient made from electron transport using NADH is located in a different part of the mitochondrion than the H+ gradient made using FADH2. b)Fewer protons are pumped across the inner mitochondrial membrane when FADH2 is the electron donor than when NADH is the electron donor. c)It takes more energy to make ATP from ADP and Pi using FADH2 than using NADH. d)There is more NADH than FADH2 made for every glucose that enters cellular respiration. e)FADH2 is made only in the citric acid cycle while NADH is made in glycolysis, acetyl CoA formation, and the citric acid cycle.
Describe the process of muscle contraction and how a neuromuscular blocking agent, as in metubine, would interfere with muscle contraction.
Describe the relationship between intrapulmonary pressure, atmospheric pressure, and air flow during normal inspiration and expiration, referring to Boyle's law.
If a single E.coli cell is placed on a LB agar plate in the final stage of the quadrant streak method, how many cells would make up the resulting colony after 2 hours, and after 24 hours incubation at 37 C? explain how you get your results.
Match each important characteristic or process of Titan's atmosphere with the gas(es) and/or mechanism(s) that are thought to be responsible.
Explain why cutting an arterial vessel will cause a greater loss of blood over the same amount of time than cutting a venous vessel.
Indicate whether each of the following statements about covalent bonds is true or false. 1. A water molecule is held together by two single polar covalent bonds.
A double-stranded fragment of viral DNA, one of whose strands is shown below, encodes two polypeptides called vir-1 and vir-2. Adding this double stranded DNA fragment to an in vitro transcription and translation system yields
A researcher lyses a cell that contains nucleic acid molecules and capsomeres of tobacco mosaic virus (TMV). The cell contents are left in the covered test tube overnight. The next day this mixture is sprayed on tobacco plants. Which would be expecte..
Cleavage of DNA with restriction enzymes provides landmarks and sequence information. How frequently are specific sites found? How many sites are expected? Does this change if the DNA is circular.
Gene expression in prokaryotes involve the following except.
If a trait had a broad-sense heritability of 1, what would it mean? 0.5? 0? What type of traits has a broad-sense heritability of 1? What type of traits has a heritability of zero?
Why is it beneficial to plants that soil particles have negatively charged surfaces.
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