Amniocentesis involves sampling
a. the embryo at the eight cell stage.
b. fetal cells in the amniotic fluid.
c. sperm or egg cells.
d. fetal skin tissue.
e. placental cells
B
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Which one of the following is believed to be the major event that led to the appearance of diverse, complex multicellular organisms on Earth?
A. the increase in atmospheric oxygen B. the appearance of animals C. the appearance of plants on land D. the appearance of bulk transport systems
What is the difference between 'bacteremia' and 'septicemia?'
A. Bacteremia is an infection with bacteria. Septicemia is an infection with Septic protozoans. B. Bacteremia is the presence of living, multiplying bacteria in the bloodstream. Septicemia is the presence of endotoxins, but not necessarily of living microbial agents. C. Septicemia is the presence of living, multiplying bacteria in the bloodstream. Bacteremia is the presence of endotoxins, but not necessarily of living microbial agents. D. There is no difference-both terms denote the presence of living bacterial cells in the bloodstream.
A beneficial relationship between a plant and a glomeromycete is known as a _____.
A) hypha B) cuticle C) mycorrhiza D) lignin
peritonitis
What will be an ideal response?