The infective phase of Giardia intestinalis is
A. the cyst
B. the trophozoites
C. the oocyst
D. the promastigote
Ans: A. the cyst
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If an individual that phenotypically has dominant traits is mated to another individual that also has dominant traits and the progeny have both dominant and recessive traits it indicates that
A. Both parents are homozygotic B. Both parents are heterozygotic C. No conclusions can be made about the genotypes of the parents D. One parent is heterozygotic and one is homozygotic
The process of cumulative causation
A) was developed by W.W. Rostow. B) leads to growth in regions affected by the backwash effect. C) involves a buildup of economic activity based on external economies and localization economies. D) critiques the core-periphery concept as meaningless in today's economically interdependent world.
Which of the following produces a greenish pigment that may appear in infected wounds?
A. E. coli B. S. aureus C. S. pyogenes D. P. aeruginosa
The two categories of stem cells in the human body are embryonic stem cells and adult stem cells. Therefore, stem cells can be found in
A. embryos, after division of the original zygote. B. skin cells. C. All of the answer choices are correct. D. adults, in several specialized tissues. E. the bone marrow.