Bio Tests

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17. Sweat and skin secretions contain a mixture of molecules that kills or limits the growth of many types of microbes. This control of microbes is an example of

A a nonspecific defense against infection.

Individuals with HIV sometimes contract a pneumonia infection that is rare in the rest of the population because people with HIV

A are unable to fight off these pneumonia-causing organisms

13. The homeostatic mechanism in humans that regulates blood pH depends on the feedback of information from

B chemical receptors

The Sabin vaccine is a liquid containing weakened polio viruses. Vaccinated individuals become protected against polio because the weakened viruses

C promote production of antibodies

19. Injecting a person with a killed-bacteria vaccine can protect that individual from a disease because the proteins of the killed bacteria

C stimulate the production of antibodies which can be manufactured later in response to infection

21. How do human diseases caused by bacteria and diseases caused by viruses react to antibiotics?

D Bacterial diseases respond to antibiotics; viral diseases do not

18. What is the greatest danger to a patient who has had damage to the skin

Infections in uncovered tissues

When a soccer player kicks a ball, which two systems work directly with the muscular system?

Nervous and skeletal

Which best describes how the human circulatory and respiratory systems interact?

Oxygen is transferred to the bloodstream as blood passes by the lungs

A signal that the bladder is full is sent to the central nervous system by

Sensory neurons

Which of these describes an important event in protein metabolism that allows the body to maintain homeostasis?

The liver converts ammonia to urea that is excreted through the kidneys.

Which function do kidneys provide to maintain homeostasis

The removal of indigenous waste from the blood

Which of these secretes a hormone that regulates the rate of metabolism of the body?

Thyroid

Which two systems are involved when waste and water are removed from blood as it flows through the kidneys?

Urinary and circulatory

Which of the following require a host cell because they are not able to make proteins on their own?

Viruses

15. Which of the following is a function of the nervous system?

signaling muscle tissues to contract


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