Which event during the evolution of land plants favored the synthesis of secondary compounds?
A) the greenhouse effect throughout the Devonian period
B) the reverse-greenhouse effect during the Carboniferous period
C) the association of the roots of land plants and fungi
D) the rise of herbivory
D
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Which hormone stimulates the release of T3 and T4 by the thyroid gland?
a. FSH b. LH c. TSH d. GnRH
The secondary response in the B cell response occurs when memory cells bind to ________
A) antibodies B) antigens C) histamine D) defensive proteins
The outer membrane of Gram-negative bacteria
A) is a rigid, protective outer shell. B) is also referred to as endotoxin and stimulates fever and shock. C) is the site of nutrient exchange and allows sizes and shapes of molecules to pass through it. D) has the same chemical composition as the cell membrane.
Which of the following is the best interpretation of the graph below of mussel size (x-axis) versus energy gain (line graph, left y-axis), and number of mussels eaten per day (histogram, right y-axis)? 
A. Crabs select mussels in a way that maximizes their energy gain. B. Mussel size does not seem to be a good predictor as to which mussel hungry crabs will select. C. Crabs prefer the mussels with the smallest length for their food resources. D. Mussels are selected as food sources by crabs. E. Crabs tend to consume most of the largest mussels.