Which health concerns are related to lifestyle factors?
a. obesity and diabetes
b. all cancers
c. Lyme disease
d. bacterial infections
e. SARS respiratory infections
ANSWER: a
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A cross-reaction is an interaction between an antibody or TCR and
A) a heterologous antigen. B) a homologous antigen. C) either a heterologous or homologous antigen. D) None of these are correct.
Which process results in a zygote?
(a) meiosis. (b) mitosis. (c) fertilization. (d) none of the above.
The attenuated oral poliovirus vaccine (OVP) is no longer administered in the U.S.A. because it
A) is very toxic. B) does not provide good immunity. C) can revert to wild-type virulence. D) can be spread to contacts. E) can be spread to contacts and can revert to wild-type virulence.
Photoautotrophs are the only organisms that can incorporate (fix) carbon dioxide into biomolecules.
Answer the following statement true (T) or false (F)