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Indietro

Chapter 7

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Termini in questo insieme (27)

  • What is a redox reaction?

    A reaction involving the transfer of electrons between molecules.

  • Define oxidation.

    Oxidation is the process of losing one or more electrons.

  • Define reduction.

    Reduction is the process of gaining one or more electrons.

  • What does NADH stand for?

    Nicotinamide adenine dinucleotide in its reduced form.

  • What is the role of NADH and FADH2 in cellular respiration?

    They act as electron carriers, transporting electrons to the electron transport chain.

  • What is NAD+?

    The oxidized form of NADH, having lost electrons.

  • What is FAD?

    The oxidized form of FADH2, having lost electrons.

  • What mnemonic helps remember oxidation and reduction?

    LEO the lion says GER: Losing Electrons is Oxidation, Gaining Electrons is Reduction.

  • What happens during oxidation?

    A molecule loses electrons.

  • What happens during reduction?

    A molecule gains electrons.

  • What are electron carriers?

    Molecules like NADH and FADH2 that transport electrons during cellular respiration.

  • Why are NADH and FADH2 called 'electron taxi cabs'?

    Because they transport electrons to different locations within a cell.

  • What is the charge of an electron?

    Negative.

  • What does FADH2 stand for?

    Flavin adenine dinucleotide in its reduced form.

  • What is the significance of NAD+ and FAD in redox reactions?

    They are the oxidized forms that accept electrons to become NADH and FADH2.

  • What is the relationship between oxidation and reduction?

    They occur simultaneously; one molecule is oxidized while another is reduced.

  • What does the 'H' in NADH and FADH2 signify?

    The presence of hydrogen, indicating the reduced form of the molecules.

  • What is the role of electrons in redox reactions?

    Electrons are transferred from one molecule to another, driving the reactions.

  • Why is understanding redox reactions important?

    It is crucial for understanding metabolic pathways and energy transfer in biological systems.

  • What does 'oxidized' mean?

    A molecule has lost electrons.

  • What does 'reduced' mean?

    A molecule has gained electrons.

  • How do NADH and FADH2 differ in electron carrying capacity?

    Both carry a maximum of 2 electrons, but FADH2 also carries 2 hydrogen ions.

  • What is the significance of the electron transport chain?

    It is where energy from electrons is used to produce ATP during cellular respiration.

  • What happens to NAD+ when it gains electrons?

    It becomes NADH.

  • What happens to FAD when it gains electrons?

    It becomes FADH2.

  • Why do oxidation and reduction always occur together?

    Because electrons lost by one molecule are gained by another.

  • What is the role of hydrogen ions in forming NADH and FADH2?

    Hydrogen ions are picked up along with electrons to form the reduced versions of these carriers.