What is the function of the kinins released when mast cells degranulate?
A) activation of the complement system
B) increased vascular permeability
C) smooth muscle contraction
D) increased production of tears and saliva
E) chemotactic factors
C
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Aerobes use ____ as the final electron acceptor in electron transport phosphorylation
a. hydrogen b. carbon c. oxygen d. H2O e. NAD+
The most abundant protein in mammals is collagen. This strong, ropelike molecule is particularly abundant in which tissue?
A. Skeletal muscle B. Ligaments C. Spinal cord D. Heart muscle
All cells contain
a. cytoplasm. b. a cell wall, nucleus, and cytoplasm. c. DNA, plasma membrane, and cytoplasm. d. mitochondria, plasma membrane, and cytoplasm.
In the accompanying figure, the formation of eggs would occur in the structure labeled as ____
a. 1
b. 5
c. 6
d. 9
e. 10