wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Which of these is not a macromolecule?

A
Starch (mol weight -- 2.27 × 108 Da).
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Collagen (mol weight -- 5,000 Da).
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Cholesterol (mol weight -- 386 Da).
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Vitamin A (mol weight -- 286 Da).
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is D Vitamin A (mol weight -- 286 Da).
Biomolecules are classified as macro and micromolecules, depending on many factors, but the major one being their molecular size and weight. Generally, biomolecules weighing less than 800 Daltons are classified as micromolecules and those weighing above them, as macromolecules. But there are exceptions, primarily with fats and lipids. Lipids do not exist as individual molecules but as micelles or vesicles, of many molecules. Therefore they are neither acid soluble nor weigh less than 800 Daltons in vivo. Hence, even though cholesterol weighs less than 800 Daltons, it is still considered as a Macromolecule.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon