In some cases, when an insect begins feeding on a leaf the plant responds by activating a signaling pathway that
results in the production of ____, which disrupt an insect's capacity to digest proteins
a. gibberellins
b. lipases
c. chitinases
d. protease inhibitors
e. cytokinins
ANSWER: d
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Four of the five answers listed below are conditions caused by vitamin deficiency. Select the
exception. a. scurvy b. pellagra c. rickets d. beriberi e. goiter
AIDS is caused by the retrovirus HIV, which makes DNA complementary to the viral RNA using
a. RNA polymerase b. beta-galactosidase c. RNA synthase d. ATPase e. reverse transcriptase
Green and purple bacteria
A) contain chlorophyll a like plants. B) give off oxygen as a product of photosynthesis. C) live in salt water. D) include species that use sulfur in photosynthesis.
Declining amphibian populations are correlated with four of the following. Which one is the exception?
A. Habitat loss B. Introduction of non-native species C. Long-term changes in climate D. Evolutionary changes in amphibians E. Fungal infections and parasitic diseases