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

Biology & Microbiology

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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

Biology & Microbiology

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

Biology & Microbiology

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

Biology & Microbiology

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.

Biology & Microbiology