What type of cell does Ehrlichia chaffeensis infect in humans?
A) capillary endothelial cells
B) B lymphocytes
C) neutrophils
D) monocytes
E) eosinophils
D
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The __________ the conditions are, the __________
new growth plants add in a given season, and the __________ the primary productivity. a. more conducive; less; lower b. harsher; more; greater c. harsher; less; lower d. more conducive; more; lower e. harsher; more; lower
Which structure is the first to contain cells of a new individual?
a. egg b. zygote c. secondary oocyte d. polar body e. spermatid
Living organisms are categorized into two major groups based on the presence or absence of a nucleus. What group is defined by the presence of a nucleus?
A) mitochondrial organism B) eukaryotic organism C) prokaryotic organism D) bacterium E) virus
In a human zygote, where did most of the cytoplasm come from?
A) spermatogonia B) oocyte C) polar bodies D) sperm