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Infectious Diseases Pre Test
December 1, 2020
Welcome to your Infectious Diseases Pre Test
Which animal's food sources most likely increased after the mall opened?
Data for four animal populations in a wooded area were collected before and after a shopping mall was constructed near the area. The graph shows changes in the populations.
A. Snakes, squirrels, and raccoons
B. Squirrels only
C. Snakes, squirrels, and deer
D. Raccoons only
At which temperature range will there be the most competition for space among these fish species?
Fish in a lake have to compete for space. Different fish have different optimal temperature ranges. The graph below shows the temperature ranges of four fish species.
A. 5⁰C to 10⁰C
B. 10⁰C to 15⁰C
C. 15⁰C to 20⁰C
D. 20⁰C to 25⁰C
How many citizens chose alternative energy sources?
Citizens in a communty were surveyed about the type of energy resource they would like for a new power plant. The results of the survey are shown in the table below.
Based on the following information, what is the most likely advantage of the bony fish tail fin over the shark tail fin?
After a trip to an aquarium, some students compared the tail fin of sharks with the tail fin of bony fish. The students made a data table listing characteristics of each type of tail fin.
A. It is easier for a bony fish to change direction quickly since muscles control the movement of the tail fin.
B. The bones in the tail fin help a bony fish sink to lower depths in the water when searching for food.
C. The flexible tail fin is fanned by the water, so a bony fish uses less energy to swim.
D. The thin spines of the tail fin prevent a bony fish from being seen by larger predator fish.
Which of the following best summarizes the effect of saltwater on these plant species?
The graph shows the percent of seeds from two plant species that sprout when grown in water containing different amounts of salt.
A. Species 1 can sprout only in freshwater, and Species 2 can sprout only in saltwater
B. Both species can sprout in freshwater and saltwater, but Species 2 can sprout in a higher salt concentration than Species 1.
B. Both species can sprout in freshwater and saltwater, but Species 1 can sprout in a higher salt concentration than Species 2.
D. Species 1 can sprout only in water with a low salt concentration, but Species 2 is not affected by the salt concentration.
If this day continues to be sunny, what will most likely happen to the length of the shadow from 2 P.M. to 4 P.M.?
The graph below shows changes in the length of the shadow of a tree during part of a day.
A. The length of the shadow will stay the same.
B. The length of the shadow will decrease and then increase.
C. The length of the shadow will increase.
D. The length of the shadow will decrease.
Health-care workers are exposed to many different types of pathogenic and nonpathogenic microorganisms. Which body systems work together to protect the body from pathogens?
A. Muscular and vascular
B. Digestive and excretory
C. Circulatory and immune
D. Endocrine and reprodcutive
Which of these describes a difference between viruses and cells?
A. Cells only contain DNA, and viruses only contain RNA.
B. Viruses cannot be seen with any microscopes and cells can.
C. Cells reproduce independently, and viruses require a host to reproduce.
D. Viruses have membranes made of proteins, and cells have membranes made of nucleic acid.
In the 1880s, Louis Pasteur developed a method of weakening viruses. The weakened viruses could be injected into healthy individuals. How is this method effective in fighting viral diseases?
A. The immune system develops antibodies in response to the weakened viruses.
B. The weakened viruses attach to unaffected viruses in the host and interrupt the viral reproductive cycle.
C. The rate of genetic mutation in the host is decreased due to the introduction of weakened viruses.
D. Weakened viruses are unable to enter the host organism.
The 1918 influenza epidemic killed between 50 million and 100 million people worldwide. This epidemic happened near the end of World War I. More people died from the influenza epidemic than were killed in the war. Which of the following explains why this virus was so deadly worldwide?
A. Infected soldiers returning from the war spread the virus when they coughed.
B. Food was scarce because of the war, so people were undernourished, and their immune systems were weakened.
C. Medical personnel often became ill as a result of exposure to airborne virus particles.
D. All of the above
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