rRNA is (select all that apply):
A. associated with ribosomes.
B. the least abundant RNA in the cell.
C. the most abundant RNA in the cell.
D. relatively consistent in sequence between organisms.
E. considerably variable in sequence between organisms.
A, C, D
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About how many days into a woman's cycle does it typically take for a mature follicle to burst?
A. 7 B. 14 C. 21 D. 28
Which is correct for the description "alkaline slant, acid butt, no H2S"?
a. Salmonella spp. b. E. coli c. Proteus spp. d. Pseudomonas spp.
You are reading the journal of an amateur naturalist who visited the Sonoran Desert in the last century. Which of his descriptions of desert plants would you question?
A) a plant whose seeds will not germinate unless soaked B) a perennial that flowers only after years of vegetative growth and produces a large number of seeds C) a late winter hillside covered with wildflowers D) a common annual that produces one large seed per plant
All tapeworms are intestinal parasites that completely lack digestive systems.
Answer the following statement true (T) or false (F)