In bone, crystals of calcium phosphate impregnate the extracellular matrix containing fibers of
A. troponin.
B. myosin.
C. actin.
D. chitin.
E. collagen.
E. collagen.
Biology & Microbiology
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In humans, blood cells are produced in the
a. bone marrow. b. heart. c. kidneys. d. liver. e. lymph nodes.
Biology & Microbiology
Which process employs exposing cells cultured in the laboratory to DNA with a gene of interest?
a. transformation b. transfection c. DNA fingerprinting d. polymerase chain reaction e. gel electrophoresis
Biology & Microbiology
What happens to the photosynthetic reactions when no sunlight is present?
What will be an ideal response?
Biology & Microbiology
If a prodromal period exists for a certain disease, it should occur prior to
A) incubation. B) illness. C) decline. D) convalescence.
Biology & Microbiology