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bio204.s1.d46
cava bio 204 s1.d46 3.15 The Krebs Cycle
| Question | Answer |
|---|---|
| The Krebs Cycle is a cycle of chemical reactions inside the [...] that converts acetyl-CoA to various products that feed electron transport chains, thereby making large amounts of ATP. | The Krebs Cycle is a cycle of chemical reactions inside the mitochondria that converts acetyl-CoA to various products that feed electron transport chains, thereby making large amounts of ATP. |
| Krebs Cycle is our quarterback. We toss him a packet of footballs ([...]) and he tosses the footballs (electrons) to his team-mates (electron cariers) who run plays (electron transport chains) | Krebs Cycle is our quarterback. We toss him a packet of footballs (Acetyl Co-A) and he tosses the footballs (electrons) to his team-mates (electron cariers) who run plays (electron transport chains) |
| Football Analogy: Electron carriers run plays (electron transport chains) and score touchdowns on the [...] thereby earning ATP. | Football Analogy: Electron carriers who run plays (electron transport chains) and score touchdowns on the inner membrane thereby earning ATP. |
| Before the Krebs cycle begins, the [...] acid molecules move out of the cytosol and into the mitochondria of the cells | Before the Krebs cycle begins, the pyruvic acid molecules move out of the cytosol and into the mitochondria of the cells |
| glycolysis breaks down glucose to transfer the energy to the chemical bonds of [...] (aka [...] acid). | glycolysis breaks down glucose to transfer the energy to the chemical bonds of pyruvate (aka pyruvic acid). |
| In the mitochondria of your cells, pyruvate (aka pyruvic acid) is converted into [...], the starting material of the Krebs cycle. | In the mitochondria of your cells, pyruvate (aka pyruvic acid) is converted into acetyl-CoA, the starting material of the Krebs cycle. |
| Electron carriers store energy that is used in the production of ATP. (In our football analogy, they carry high-energy [...] footballs) | Electron carriers store energy that is used in the production of ATP. (In our football analogy, they carry high-energy electron footballs) |
| Carbon dioxide is an indication that cells are discharging waste during the [...] cycle.... (but some carbon dioxide is also produced by some types of fermentation) | Carbon dioxide is an indication that cells are discharging waste during the Krebs cycle.... (but some carbon dioxide is also produced by some types of fermentation) |
| Carbon dioxide is [...] in high concentrations. | Carbon dioxide is poisonous in high concentrations. |
| For each molecule of [...], one acety-CoA molecule is generated. | For each molecule of pyruvate, one acety-CoA molecule is generated. |
| Each time you run through the Krebs cycle, you consume one acetyl group (a 2-carbon chain) and produce [...] molecules of carbon-dioxide (one for each of the carbons in the acetyl group. The co-enzyme A is recycled and used again. | Each time you run through the Krebs cycle, you consume one acetyl group (a 2-carbon chain) and produce two molecules of carbon-dioxide (one for each of the carbons in the acetyl group. The co-enzyme A is recycled and used again. |
| The Krebs cycle goes by a few other names: The [...] acid cycle (CAC, because citric acid is involved), and the tricarboxylic acid cycle (TCA, because citric acid and many of the other acids involved are types of tricarboxylic acids). | The Krebs cycle goes by a few other names: The citric acid cycle (CAC, because citric acid is involved), and the tricarboxylic acid cycle (TCA, because citric acid and many of the other acids involved are types of tricarboxylic acids). |
| In 1937, a German biochemist named Hans Adolf [...] discovered the chemical reactions that we now know as the [...] Cycle (or the citric acid cycle). In 1953, 16 years after his discovery, [...] won the Nobel Prize in Physiology or Medicine. | In 1937, a German biochemist named Hans Adolf Krebs discovered the chemical reactions that we now know as the Krebs Cycle (or the citric acid cycle). In 1953, 16 years after his discovery, Krebs won the Nobel Prize in Physiology or Medicine. |
| The Krebs cycle generates electron carriers that will fuel the next stage of cellular respiration—the [...]. | The Krebs cycle generates electron carriers that will fuel the next stage of cellular respiration—the electron transport chain. |
Created by:
mr.shapard
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