Chapter 3: Q. 21 (page 93)
Why are biological macromolecules considered organic?
They are made up of elements including carbon atoms.
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Which of the following is not an extracellular matrix role
of carbohydrates?
a. protect an insectโs internal organs from external
trauma
b. prevent plant cells from lysing after the plant is
watered
c. maintain the shape of a fungal spore
d. provide energy for muscle movement
Phospholipids are important components of ________.
a. the plasma membrane of cells
b. the ring structure of steroids
c. the waxy covering on leaves
d. the double bond in hydrocarbon chains
The following chemical reactants produce the ester ethyl
ethanoate (C4H8O2):
C2H6O + CH3COOH
What type of reaction occurs to make ethyl ethanoate?
a. condensation
b. hydrolysis
c. combustion
d. acid-base reaction
Plant cell walls contain which of the following in
abundance?
a. starch
b. cellulose
c. glycogen
d. lactose
The ฮฑ-helix and the ฮฒ-pleated sheet are part of which
protein structure?
a. primary
b. secondary
c. tertiary
d. quaternary
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