Viral-infected human cells often send out special proteins that serve as an early warning system to uninfected cells. In response, the uninfected cells develop antiviral proteins that protect them
The early warning proteins sent out by viral-infected cells are A) complement.
B) interferon.
C) antibodies.
D) antigens.
E) antibiotics.
B
You might also like to view...
What would happen if the body did not produce insulin?
A. Cells of the body would neither take in glucose from the bloodstream nor release it into the blood stream. B. Cells of the body would keep on taking glucose from the bloodstream and storing it. C. Cells of the body would not release glucose into the blood stream when glucose levels were low in the blood stream. D. Cells of the body would not be able to take in glucose, even when glucose levels were high in the blood stream.
The favoring of the heterozygote within the
population is an example of a
a. balanced polymorphism. b. genetic drift. c. the Red Queen effect. d. sexual selection. e. disruptive selection.
When a transgene is used in mice to knock out a specific function, two problems that might occur are the unintended introduction of multiple copies or abnormal gene expression. The second of these problems is related to __________
A) position effect B) homologous recombination C) vector insufficiency D) mitotic recombination E) unequal crossing over
Eyes are relatively vulnerable to infection because
A. there is scant normal microbiota to serve a protective role. B. immune privilege restricts access to the cells conferring innate immunity. C. they are not covered by keratinized epithelium. D. All of these answers are correct.