Question
In: Biology
1.) In the first step of glycolysis, the cell SPENDS an ATP and phosphorylates glucose as...
1.) In the first step of glycolysis, the cell SPENDS an ATP and phosphorylates glucose as soon as it enters the cell. Why does the cell do this? Give two reasons!
2.) Speculate on why glycolysis, which is the beginning point of many catabolic pathways does not require oxygen.
Solutions
Expert Solution
Answer
DETAILED ANSWERS AND EXPLANATION OF QUESTIONS ARE GIVEN IN FOLLOWING IMAGE.
Que 1-reasons
- to prevent movement of glucose out of cell
- hexokinase has high afdinity and low km towards glucose at nano concentration.
Que 2-answer
- When glycolysis evolved during past back history there was no oxygen in atmosphere.
- high energy electrons released by glycolysis can not be absorbed by oxygen so it can be absorbed by electron carrier molecule called as NAD+.
gladiator answered 1 year agoRelated Solutions
Hexokinase catalyzes the first step of glycolysis, in which glucose is phosphorylated to form glucose-6-phosphate. Which...
Hexokinase catalyzes the first step of glycolysis, in which
glucose is phosphorylated to form glucose-6-phosphate. Which of the
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Hexokinase is found in the mitochondrial membrane.
Hexokinase consists of two domains, or lobes, that come together
when glucose and the MgATP2� complex are bound.
Most kinases require the presence of a monovalent metal ion
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The conformational shift that occurs when glucose, but not
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how many atp are consumed by the glycolysis of a single molecule of glucose
how many atp are consumed by the glycolysis of a
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The net gain of ATP molecules per molecule of glucose in the reactions of glycolysis is...
The net gain of ATP molecules per molecule of glucose in the
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sugars?
Fructose:
Mannose:
Galactose:
1. What is the major byproduct of anaerobic glycolysis: ATP, NADH, lactate, or pyruvate? 2. Glucose...
1. What is the major byproduct of anaerobic glycolysis: ATP,
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2. Glucose is retained in cells because it is phosphorylated,
degraded, bound, or modified by amylase?
3. Is the final product of glycolysis acetyl CoA, glucose,
lactate, or pyruvate?
4. Does Glycolysis generate no ATP, 1 ATP, 2 ATPs, or NADH?
5. Are DNA ends replicated by DNA polymerase, telomerase, RNA
polymerase, or primase?
Compare the ATP yield of three glucose molecules that enter glycolysis and are converted to pyruvate...
Compare the ATP yield of three glucose molecules that enter
glycolysis and are converted to pyruvate with that of three glucose
molecules that proceed through the pentose phosphate pathway such
that their carbon skeletons (as two F6P and one GAP) reenter
glycolysis and are metabolized to pyruvate. Indicate the steps
where ATP was used or produced and the overall ATP totals.
consider the conversion of glucose to lactate by glycolysis. Determine number of ATP, NADH, and FADH2...
consider the conversion of glucose to lactate by glycolysis.
Determine number of ATP, NADH, and FADH2 produced by this rxn
sequence.
Compare the ATP yield of three glucose molecules that enter glycolysis and are converted to pyruvate...
Compare the ATP yield of three glucose molecules that enter
glycolysis and are converted to pyruvate with that of three glucose
molecules that proceed through the pentose phosphate pathway such
that their carbon skeletons (as two F6P and one GAP) reenter
glycolysis and are metabolized to pyruvate. Indicate the steps
where ATP was used or produced and the overall ATP totals.
Glycolysis is a catabolic pathway, in which glucose is broken down to generate ATP. Would this...
Glycolysis is a catabolic pathway, in which glucose is broken
down to generate ATP. Would this pathway occur when there is high
energy charge in the cell? Why/why not?
after step 5 in glycolysis can atoms from C 1 of the original glucose molecule distinguish...
after step 5 in glycolysis can atoms from C 1 of the original
glucose molecule distinguish from the C 6 of the original molecule
that is where does the original C 1 end up after step 5 and where
goes the original C 6 after step 5? Is it at the same place or
different place
Why does the mitochondria produce more ATP than glycolysis for each molecule of glucose broken down?...
Why does the mitochondria produce more ATP than glycolysis for
each molecule of glucose broken down?
What charges the electrons in the photosystems (the source and
the conduit that moves it into the electrons)
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