Monomers and Carbohydrates Questions Flashcards
(7 cards)
1
Q
Which of glycogen, starch and cellulose contain 1-6 links?
A
glycogen and starch only
2
Q
Which of glycogen, starch and cellulose contain hydrogen bonds?
A
cellulose only
3
Q
Give 4 features of starch and explain how they allow it to act as a storage substance:
A
- branched so quickly hydrolyses glucose for respiring cells
- insoluble so doesn’t affect water potential
- coiled so compact so can fit many molecules in small area
- large so can’t diffuse across cell membrane
4
Q
A muscle cell was tested to detect the presence of starch. Explain the result of the test.
A
No colour change from orange to blue/black as muscle cell is an animal cell which stores glycogen and not starch
5
Q
Condensation reactions form what type of bond between 2 monomers?
A
covalent
6
Q
Name the macromolecules
A
protein, nucleic acid, lipid, carbohydrates
7
Q
Explain how cellulose is adapted for its function in plant cells:
A
- long and is straight-chained
- chains link together by many hydrogen bonds which form microfibrils
-so cellulose can provide strength and stability to cell wall
