________ from foraminifera make up the White Cliffs of Dover and the stones used to build the great pyramids.
Fill in the blank(s) with the appropriate word(s).
Plates
Biology & Microbiology
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Which of the following is a category of exotoxin?
A) cytolytic toxin B) lipophilic toxin C) ?-toxin D) ?-toxin
Biology & Microbiology
How many coiled and fluid-filled ducts are found in
each cochlea? a. 1 b. 2 c. 3 d. 4 e. 5 or more
Biology & Microbiology
Plants produce steroids called phytosterols, which have various functions in plant physiology. Some phytosterols are thought to have a defensive function, however, specifically in repelling insect herbivores
How might plant-derived steroids help protect plants from insect attack?
Biology & Microbiology
B cells interact directly with
a. helper T cells. b. inflammation. c. phagocytes. d. the complement system.
Biology & Microbiology