Rockweeds overcome the problems of desiccation by:
a. growing only in shaded areas.
b. having a gelatinous covering.
c. evaporating water from their tissues.
d. bending with the waves.
e. being covered with a waxy cuticle.
B
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When DNA with variable number tandem repeats (VNTRs) is sequenced and visualized on a gel, the resulting fragments separate according to their:
A. A-T content. B. G-C content. C. color. D. size. E. shape.
Although Desulfotomaculum species stain Gram- ________ , these bacteria possess a cell wall more closely related to Gram- ________ bacteria and are correctly placed in the low 
Firmicutes.
Fill in the blank(s) with the appropriate word(s).
During which phase(s) of urine formation are H+, K+, and urea transported out of peritubular capillaries and into filtrate?
a. tubular secretion b. glomerular filtration c. tubular reabsorption d. all of the choices
Lymphocytes that become part of cell-mediated immunity arm of the adaptive immune response develop in the:
A) intestine. B) bone marrow. C) spleen. D) lymph nodes. E) thymus.