Control measures for hepatitis B include
A. excluding contact with contaminated materials.
B. vaccination of high-risk groups.
C. passive immunotherapy within 7 days of exposure.
D. All of the choices are correct.
Answer: D
You might also like to view...
The most recent mass extinction on Earth:
a. happened 65 million years ago when dinosaurs became extinct b. was 248 million years ago when Pangea formed c. is going on now and is due to human activities d. happened 544 million years ago during a period of massive glaciation e. occurred 360 million years ago, when 70% of marine groups were lost
Which model of population growth would you employ if reproduction occurs in discrete time periods rather than being continuous?
A) exponential B) reciprocal C) logarithmic D) geometric
Embryonic stem cells are different from primary cell cultures or permanent cell lines derived from a tissue in that they are capable of
a. generating many cell types. b. growing and dividing. c. synthesizing their own DNA. d. transporting nutrients across their plasma membrane.
Which of the following statements is false about quorum sensing?
A) Quorum sensing allows bacteria to alter their protein synthesis in response to changes in population density. B) Quorum sensing allows unicellular organisms to coordinate their processes. C) Bacteria can communicate using chemical messengers called autoinducers. D) Coordinated protein synthesis through quorum sensing is the foundation for forming biofilms. E) Bacteria that experience quorum sensing have a decreased chance of survival.