User:Eric Martz/Hemoglobin Quiz

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{The polypeptide chains that fit together to make one hemoglobin molecule are held together by
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- disulfide bonds
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- oxygen
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{The iron atom is held in place by direct contact with
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- carboxyl groups in heme
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- carbons in heme
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Revision as of 19:59, 16 September 2018

Hemoglobin Quiz

You will get immediate feedback when you click Submit. The quiz below is offered to accompany the interactive tutorial Hemoglobin Molecular Structure.

1.

The number of protein chains in each hemoglobin molecule is

2.

The number of heme-iron complexes in each hemoglobin molecule is

3.

When saturated, the number of oxygen atoms bound by one molecule of hemoglobin is
→ Number of oxygen ATOMS, not number of O2 molecules.

Questions below may have more than one correct answer.

4. The function of hemoglobin is

To pick up oxygen in the lungs.
To convert oxygen to carbon dioxide and water.
To transport oxygen.
To release oxygen in the lungs.
To release oxygen in body tissues.

5. The polypeptide chains that fit together to make one hemoglobin molecule are held together by

disulfide bonds
covalent bonds
non-covalent interactions
oxygen

6. The iron atom is held in place by direct contact with

carboxyl groups in heme
nitrogens in heme
carbons in heme
sulfur atoms in cysteines
nitrogen atoms in histidines
oxygen atoms in histidines

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