What is true about homologous structures?
a. they are always used for the same function
b. they are formed from different
developmental pathways
c. the same genes direct their development
d. they are only found within species not
between species
e. more than one of these is correct
C
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Which of the following pairs of organisms excrete nitrogenous wastes in the form of uric acid?
A) mice and birds B) insects and birds C) lions and horses D) humans and frogs E) fish and turtles
In which of the following scenarios would hemolytic disease of the newborn be a possibility?
A. Both mom and dad are Rh-negative. B. Mom is Rh-negative and dad is Rh-positive. C. Mom is blood type O and dad is blood type B. D. Both mom and dad are Rh-positive. E. Mom is Rh-positive and dad is Rh-negative.
The p53 protein functions as a
carcinogen positive regulator of the cell cycle tumor suppressor proto-oncogene
Immediate hypersensitivity is ________ mediated, and delayed type hypersensitivity is ________ mediated
a. antibody / cell b. cell / antibody c. Th1 / IgE d. IgG / Th2