Which of the following describe a growth form of lichens?
A. crustose
B. fruticose
C. foliose
D. all of the choices provided
E. none of the choices provided
D. all of the choices provided
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Pheromones are
a. used in nonvocal communication. b. found only in the invertebrates. c. signals to members of other species. d. types of internal hormones that control maturation. e. involved only in learned behaviors.
In a __________, water or some nutrient moves from
an environmental reservoir, through organisms, then back to the environment. Fill in the blank(s) with the appropriate word(s).
If the NaCl concentration drops below 1.5 M the cell walls of Halobacterium become more rigid.
Answer the following statement true (T) or false (F)
Renin is secreted by which one of the following structures?
A) distal tubule B) juxtaglomerular apparatus C) renal medulla D) glomerulus E) Bowman's capsule