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3 years ago

The effect of pH on the binding of oxygen to hemoglobin results in:

Chemistry

1 answer:

siniylev [52]3 years ago

3 0

Answer:

D. increasing protonation of β-chains His 146 with decreasing pH (i.e., higher H concentration) which stabilizes the T state conformation of Hemoglobin.

Explanation:

Human Hemoglobin is a tetrameric protein: consists of two α- and two β-subunits, and is organized as a dimer of two identical αβ dimers to form an (αβ)2 tetramer. Each subunit contains one heme group to which one O2 molecule binds reversibly. Hemoglobin principally has T low oxygen affinity state and R high oxygen affinity state, deoxyHb and fully liganded Hb respectively.

The binding of ligands such as H+, Cl- or BPG lowers the O2 affinity, in such way that affinity of hemoglobin towards oxygen O2 is decreased, when acidity of the environmental solution increases. So, when pH decrease acidity increases, there are more H+ available who bind to His 146 in β1 and β2 respectively. After that, O2 is released.

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If you are supposed to put in 2/4 a cup sugar for a recipe, can you just put in a half cup of sugar?

natta225 [31]

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Read 2 more answers

If hydrofluoric acid is a stronger acid than acetic acid, which statement is most likely true?

Alchen [17]

Answer: The statement conjugate base of hydrofluoric acid is weaker than that of acetic acid is most likely true.

Explanation:

A strong acid upon dissociation gives a weak conjugate base. This can also be said as stronger is the acid, weaker will be its conjugate base or vice-versa.

Hydrofluoric acid is a strong base as it dissociates completely when dissolved in water.

For example, $HF \rightleftharpoons H^{+} + F^{-}$

The conjugate base is $F^{-}$ which is a weak base.

Acetic acid is a weak acid as it dissociates partially when dissolved in water. So, the conjugate base of acetic acid is a strong base.

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3 years ago

Explain how you would test the presence of oxygen and hydrogen gases.

Vedmedyk [2.9K]

Place a burning splint near the opening of a test tube. If a popping noise occurs, it's probably hydrogen. Place a glowing splint in the test tube, and if it reignites, it could be oxygen. Place a burning splint into a test tube, and if it goes out, it could be carbon dioxide.

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How to identify coplanar molecule?

lozanna [386]

See if the carbon atoms are SP2 or Sp they the coplanirty is more and if its Sp3 hybridization it cant be in coplanar as Sp3 is having Td shape where as sp2 and sp are not :)

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3 years ago

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elena55 [62]

Answer:

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Explanation:

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