CONTEMPORARY ISSUES IN BIOLOGY EXAM 3 SAWEY, TCU

CONTEMPORARY ISSUES IN BIOLOGY EXAM 3 SAWEY, TCU

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Drugs/treatment for HIV - ---Answers---more than dozen drugs developed to fight HIV. available as "drug cocktails" in '96. drugs such as protease inhibitors disrupt reproduction in cells

AIDS can't be cured because - ---Answers---o Hides in the memory t cells where drugs do not attack it.

• Becomes activated if the memory t cells become active.

Origin of HIV in humans - ---Answers---occurred in chimpanzees in western africa. Proposed that a human hunter in D.R.C. contracted the virus and then carried it out of the area about 70yrs ago. In Africa was spread primarily by heterosexual sex

AIDS has now killed how many people worldwide since 1980? - ---Answers---~35 million people, majority being in Sub- Saharan Africa

True or false When a microbe jumps species it usually is a dead end but it can be passed person to person. - --- 1 / 3

Answers---FALSE; it normally can't be passed person to person EXCEPT when it's started from a primate or pig

True or false AIDS is the last stage of an HIV infection. - --- Answers---TRUE

With a deficiency in the immune system, a person can get what? - ---Answers---Many types of infections and cancers

Who found the first vaccine against smallpox and used pus from cowpox lesions? - ---Answers---Dr. Edward Jenner

How is smallpox transmitted? - ---Answers---in contaminated droplets (body fluids) or in contaminated clothes.

Why did dairy maids never get smallpox? - ---Answers--- Their exposure to cowpox protected them from it b/c the viruses have similar protein coats

How does the Smallpox vaccine work? What is injected into body? - ---Answers---Injection of live Vaccinia viruses that allow formation of memory cells

What are the consequences/reasons for stopping the immunization against smallpox? - ---Answers----risk of reaction to the vaccine is greater than risk of getting smallpox 2 / 3

-there are now millions of people not protected against it

What is the controversy over smallpox now? - ---Answers--- If the remaining stocks of the smallpox virus at the CDC should be destroyed

True or false the CDC and NIH have concluded that there is no scientific evidence to support a causative link between thimerosol in vaccines and autism. - ---Answers---TRUE

Before the age of 12, how many inoculations and booster shots do kids receive? - ---Answers---Up to 22

___ % of children are fully vaccinated - ---Answers---77% the rest of the children are only missing a few shots

Benefits of vaccines - ---Answers----saves 33,000 lives -prevents 14 million infections -saves $10 billion in medical costs

True or false booster shots are necessary for some shots b/c additional shots increase the amount of antibodies produced by the I.S. - ---Answers---TRUE

Caused by a virus that attacks the N.S. And prevents nerve impulses being sent to the muscles. Without nerve impulses,

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