Which of the following is an example of post-translational modification? (Select all correct choices)
A. Digestive proteins are translated into
inactive forms that can be activated at a later
time and/or in a different place.
B. Chaperone proteins help newly translated
proteins achieve the appropriate tertiary
structure.
C. Proteins are modified by the replacement
of one or more amino acids by sugars, which
may then target the protein to a specific cell
compartment.
A,B
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Plants contain meristems whose major function is to _____
A) attract pollinators B) absorb ions C) photosynthesize D) produce more cells E) produce flowers
The main form in which sugars are transported in the phloem sap is
a. glucose. b. lactose. c. starch. d. sucrose. e. fructose.
Agar and carrageenan are extracted from ____ for use as thickeners or stabilizers in foods, cosmetics, and personal care products
a. brown algae b. red algae c. green algae d. brown algae and green algae e. red algae and green algae
The major difference between protostome animals and deuterostome animals is _______.
a) whether or not they reproduce sexually or asexually b) the presence or absence of a gastrovascular cavity c) which opening to the digestive system forms first d) their type of symmetry