survive the winter? What organelle(s) is/are responsible for keeping the trees a
ID: 217334 • Letter: S
Question
survive the winter? What organelle(s) is/are responsible for keeping the trees alive throughout winter? (1.5 pts) 3. While trying to save Princess Zelda in the Kingdom of Hyrule, a young warrior named Link finds himself becoming unbearably tired. After going to the hospital (al known as the Fairy Fountain), the doctor informs Link that his cells have the followi conditions: Elevated ADP Low ATP Elevated NAD+ Low NADH Weak proton gradient in the electron transport chain Elevated Pyruvate Low Acetyl CoA Where does Link have a block in cellular respiration? How does this affect the steps that follow? (2.5pts) 4. Explain why alcohol dehydrogenase only breaks down ethanol at a specific ph range (1 pt) attach to the chromosomes. What phase of Mitosis should Professor Oak target to
Explanation / Answer
3)
NAD+ negatively impacts conversion of PDH( pyruvate dehydrogenase) from its inactive to active form. PDH is responsible for converting Pyruvate into Acetyl CoA. Since this reaction, also called the link reaction generates Acetyl CoA which then enters the TCA cycle where NADH and FADH2 is generated. These are used to generate proton gradient which then drives ATP synthesis via Electron transport chain. So the step blocked is the link reaction which converts pyruvate to Acetyl CoA.
4)
Alcohol dehydrogenase catalyses a resident reaction which can run both ways,
Alcohol + NAD+ gives acetaldehyde + NADH + H+
Hence we see if pH decreases it will increase H+ concentration and move the reaction in backward direction. Therefore it works only at certain pH range.
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