In cladistic analysis, a researcher will group species based on similarities derived from common ancestry
a. true
b. false
Answer: a. true
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Which of the following is a febrile disease characterized by a rash and is caused by a virus that can cross the placenta to cause serious fetal damage?
A. Shingles B. Measles C. Rubella D. Smallpox E. Impetigo
Stratified epithelium is typically used for
a. protection. b. secretion. c. absorption. d. excretion. e. reproduction.
Retroviruses differ from other RNA viruses by:
a. having reverse transcriptase instead of RNA-dependent RNA polymerase. b. the shape of their capsid. c. the way they infect their host cells. d. the sugar coating on their capsids. e. lytically destroying their hosts
What name is given to the food-trapping cells of sponges?
A) cnidocytes B) amoebocytes C) skeletal fibers D) choanocytes