All of the following pertain to interferon except
A. it increases capillary permeability and vasodilation.
B. it is a protein.
C. it is produced by certain white blood cells and tissue cells.
D. it includes alpha, beta, and gamma types.
E. it inhibits viruses, tumors, and cancer gene expression.
Answer: A
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Which of these differences in phenotypes could create a prezygotic barrier?
a. dogs too small to carry their offspring to term b. birds with long beaks instead of short beaks c. a whale that sings at decibels of 52Hertz (Hz) instead of 40Hz d. a goat with red hair instead of black hair
On average, what is the human respiratory rate?
a. 30-40 breaths per minute b. 2-5 breaths per minute c. 12-15 breaths per minute d. 60-65 breaths per minute
The functions of the nasal conchae are to enhance the air turbulence in the cavity and to increase the mucosal surface area exposed to air for greater efficiency.
Indicate whether the statement is true or false
The French taxonomist who, in 1809 was the first scientist to suggest that organisms that use one part of their body repeatedly would increase their abilities was
A. Charles Darwin B. Alfred Russel Wallace C. Jean lamarck D. Georges Buffon. E. Charles Lyell.