The changeover in production from IgM to IgG by an activated B cell is called a ________ event.
Fill in the blank(s) with the appropriate word(s).
class switching
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Members of this Lophotrochozoan phylum include earthworms, bristle worms, and leeches
a. Rotifera b. Mollusca c. Platyhelminthes d. Annelida e. Nemetera
What process is taking place when an unfertilized egg develops into a normal individual?
a. fragmentation b. hermaphroditic mating c. parthenogenesis d. budding
An element:
a. is a substance that cannot be broken down chemically into any other substance. b. is an atom that has lost either a proton or an electron. c. must occur naturally on earth somewhere. d. is a component of an atom. e. All of the above are true.
You wish to determine which organs function to remove waste products from the hemolymph (blood) of an insect. You do so by injecting a suspension of particulate dye particles into the abdominal cavity of an anesthetized cricket. Where will you find these dye particles 45 minutes later, after you euthanize and dissect the cricket?
A. In the protonephridia B. In the Malpighian tubules C. In the nephridia D. In the antennal glands E. In the urinary bladder F. In the nephrons of the kidneys