Activated complement proteins
a. produce antigens.
b. destroy invading cells.
c. mark invading cells for phagocytosis.
d. bind to antibodies.
e. do more than one of these things
E
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________ from Streptomyces spp. binds to the sterols in fungal membranes, disrupting membrane permeability and causing leakage of cell constituents.
Fill in the blank(s) with the appropriate word(s).
The hard mineral defense of silica plates found in some grasses is effective because:
A. silica does not taste good, so herbivores don't feed on the grass that contains it. B. silica is abrasive and it wears down insect mouth parts, so insects feed less efficiently and more slowly. C. silica is a chemical defense that is toxic to most herbivores. D. silica is able to be consumed by herbivores and used to deter their predators. E. silica binds to proteins and prevents their uptake from the guts of herbivores.
Which molecule is incorrectly matched with its monomer?
a. fat; fatty acid b. starch; ribose c. protein; amino acid d. glycogen; glucose e. nucleic acids; nucleotide
A plant has a unique photosynthetic pigment. The leaves of this plant appear to be reddish yellow. What wavelengths of visible light are being absorbed by this pigment?
A) red and yellow B) blue and violet C) green and yellow D) blue, green, and red E) green, blue, and yellow