The DTaP vaccine contains
A) purified bacterial DNA.
B) bacterial endotoxin derivatives.
C) heat-killed Bordetella pertussis cells.
D) diphtheria toxoid.
Answer: D
You might also like to view...
Fire can move, grow, reproduce, use energy, consume oxygen, and interact with its environment. Why is it not alive?
A. It does not consist of complex, well-ordered structures. B. It does not have cells. C. It does not pass on genes for traits to its offspring. D. All of the above are accurate reasons why fire is not alive.
Gram-negative bacteria are less susceptible to complement lysis than Gram-positive bacteria
Indicate whether this statement is true or false.
Future kidney cells and heart cells can differentiate into their respective specialized cell types because
A. they express a different set of genes during development B. they possess different genes C. they arise from different embryonic stem cells D. they utilize different transcription factors E. they express different genes and utilize different transcription factors during development
Some deer mice are physiologically adapted to live at high altitudes because of the following:
a. adults maintain fetal forms of hemoglobin. b. mutations in hemoglobin that increase its oxygen-binding affinity. c. mutations in myoglobin that increase its oxygen-binding affinity. d. mutations that increase heart rates. e. mutations that decrease heart rates.