In general, the blastomeres of the _____ form the endodermal tissues.
A. membrane
B. equator region
C. vegetal pole
D. animal pole
Answer: C
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Which of the following viruses has not been determined to be associated with a particular type of cancer?
A) mimivirus B) hepatitis B virus C) Epstein-Barr virus D) human papilloma virus E) hepatitis C virus
Alveoli
A) are blind sacs that extend from tracheae. B) are found in gills. C) are thick-walled. D) are not permeable to dissolved oxygen. E) have a moist surface.
Damage to its flagellum would prevent a choanocyte from
A. circulating water through the sponge. B. secreting spongin to form the sponge body. C. producing the supportive spicules. D. stinging and capturing prey.
What is the function of the Z ring in binary fission?
A. It controls the replication of DNA. B. It forms a contractile ring at the septum. C. It separates the newly synthesized DNA molecules. D. It mediates the addition of new peptidoglycan subunits.