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1.1 The study of life Read Online
Viewed from space, Earth offers no clues about the diversity of life forms that reside there. The first forms of life on Earth are thought to have been microorganisms that existed for billions of years in the ocean before plants and animals appeared. The mammals, birds, and flowers so familiar to us are all relatively recent, originating 130 to 200 million years ago. Humans have inhabited this planet for only the last 2.5 million years, and only in the last 200,000 years have humans started looking like we do today.
Question: Vertical transmission involves
Choices:
droplet transmission.
fomites.
pasteurization.
pregnant woman to fetus.
Question: Because of the natural evolution of microorganisms, it is necessary to use techniques that allow distinguishing them at the level of
Choices:
species.
genera.
family.
strain.
Question: Which of the following is called a zoonotic disease?
Choices:
measles
typhoid
common cold
plague
Question: Which of the following is recommended by the Standard Precautions guidelines?
Choices:
glove use
hand washing
a face shield
antibiotic use
glove use, hand washing AND a face shield
Question: Which of the following is not a mechanical vector?
Choices:
fomite
human
fly
flea
fomite AND human
Question: The World Health Organization (WHO) is part of the
Choices:
Food and Drug Administration.
Department of Health and Human Services.
Department of Human Resources.
United Nations.
North Atlantic Treaty Organization (NATO).
Question: Diseases that primarily exist in animals, but may be transmitted to humans are called
Choices:
parasitic.
symbiotic.
zoonotic.
epidemic.
Question: Large respiratory droplets typically travel no farther from point of release than
Choices:
3 meters.
5 meters.
1 meter.
20 meters.
Question: Approximately what percentage of hospitalized patients may develop a nosocomial infection?
Choices:
0%
5%
20%
70%
Question: An infection acquired during hospitalization is referred to as
Choices:
antibiotic-induced.
therapeutic.
medication-stimulated.
nosocomial.
Question: The reservoir of infection for botulism and tetanus is
Choices:
humans.
soil.
water.
animals.
soil AND water.
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