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4 years ago

13

The pyruvate dehydrogenase complex catalyzes the oxidative decarboxylation of pyruvate to form acetyl‑CoA. E1 , E2 , and E3 are

abbreviations for the enzymes of the complex. Classify the enzyme names, prosthetic groups, and reactions as E1 , E2 , or E3 .
a. Dihydrolipoxl (dihydrolipoamide) deydrogenase
b. Thiamine pyrophosphate (TPP) (also called TOP)
c. Lipoamide (or lipoate)
d. FAD

1 answer:

Mamont248 [21]4 years ago

4 0

It’s B Thiamine puro pyrophosphate (TPP)

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The dissociation of $Ca_3(PO_4)_2$

The solubility product constant of $Ca_3(PO_4)_2$ is $2.07 \times 10^{-32}$

The dissociation of $Ca_3(PO_4)_2$ is :

$Ca_3(PO_4)_2 \to 3Ca^{2+} + 2 PO_{4}^{3-}$

Thus;

$Ksp = [Ca^{2+}]^3 [PO_4^{3-}]^2$

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$[PO_4^{3-}]^2 = \dfrac{2.07 \times 10^{-33} }{(0.0440)^3}$

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Therefore:

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To determine the concentration of $[Ca^+]$ when the second cation starts to precipitate ; we have :

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$[Ca^{2+}]^3 = \dfrac{2.07 \times 10^{-33} }{(1.07 \times 10^{-13})^2}$

$[Ca^{2+}]^3 =1.808 \times 10^{-7}$

$[Ca^{2+}] =\sqrt[3]{1.808 \times 10^{-7}}$

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