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kodGreya [7K]
3 years ago
10

Look at the reaction pathways shown in the graph. How is the reaction different with the enzyme than without it? How is it simil

ar?

Biology
1 answer:
mixer [17]3 years ago
3 0
The red line show that Activation energy decreases with the enzyme while the activation energy increases without the enzyme. This could be caused by the reaction rate being above the enzyme's optimum temperature which can denature the substrate and cause it to slow down. The difference is the rates of the reactions and the similarity is that they’re both still creating reactants, just at much different rates due to different situations
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The average volume of a red blood cell is 87 μ m 3 . The mean concentration of hemoglobin in red blood cells is 0.34 g ⋅ ml − 1
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Answer:

A)

Concentration of hemoglobin = weight of the hemoglobin / total volume of RBCs

Therefore,

weight of the hemoglobin = concentration of the hemoglobin x Total volume of RBCs

weight of hemoglobin = (8.7x 10⁻¹¹ x 0.34) g

                                     = 2.96 x 10⁻¹¹ g

B)

molar mass of hemoglobin is 64500g/mol.

molar mass (m) = number of moles (n) x M,

∴ n = m/M

so number of moles in 2.96 x 10⁻¹¹ g of hemoglobin with molar mass 64500g/mole

= 2.96 x 10⁻¹¹ / 64500

= 4.5 x 10⁻¹⁶ moles

using Avogadro’s number to calculate the number of molecules from moles.

1 mole = 6.022 x 10²³ molecules

so, 4.5 x 10⁻¹⁶ moles

= 4.5 x 10⁻¹⁶ x 6.022 x 10²³

= 2.71 x 10⁸ molecules

Explanation:

Note: Average volume of a red blood cell = 87 μm³ = 8.7 x 10⁻¹¹ ml

        The mean concentration of hemoglobin in red cells = 0.34g/ml.

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Answer:

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