Which of the following can serve as channels or pumps within the cell membrane?
a. integral proteins
b. glycoproteins
c. cholesterol
d. phospholipids
a. integral proteins
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Which term describes soil with roughly equal proportions of sand, silt, and clay?
a. humus b. loam c. topsoil d. A horizon e. B horizon
Which of the following does not normally pass from the glomerulus into Bowman's capsule during filtration?
a. glucose b. proteins c. sodium ions d. urea e. water
Which of the following would contain
pluripotent stem cells?
a. an embryo before implantation in the uterus b. an embryo shortly after implantation in the uterus c. a placenta d. an umbilical cord e. more than one of these
A form of asexual reproduction in which an unfertilized egg can develop into an adult organism is:
A) fission. B) oviparous reproduction. C) parthenogenesis. D) budding. E) hermaphrodism.