alleryStart learning →Which pairing of a protein with its shape class is correct?
AHemoglobin is fibrous while collagen is globular
BHemoglobin and collagen are both fibrous proteins
CHemoglobin is globular while collagen is fibrous
DHemoglobin and collagen are both globular proteins
Answer & Solution
Correct answer: C. Hemoglobin is globular while collagen is fibrous
1. Proteins differ in shape as well as in molecular weight, some globular and some fibrous.
2. Hemoglobin, which carries substances in the blood, is a globular protein.
3. Collagen, found in the skin, is a fibrous protein.
4. Shape is critical to function, and it is held in place by many types of chemical bond.
5. Swapping the two labels, as one option does, would make a transport protein a structural fibre.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 3 "Biological Macromolecules", section 3.4 Proteins_
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