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- 1. Multiple ChoiceLike all other body systems, the immune system helps the body maintain homeostasis. Which statement best describes how the immune system does this?it protects other organs and tissues from infection and diseaseit breaks down food to provide cells with nutrientsit gathers information through the senses and controls all other body systemsit transports oxygen and carbon dioxide
- 2. Multiple Choice
The picture below illustrates one internal part of the body’s immune system. What process is illustrated in the picture?a skin cell destroying germs.inflammation near an opened wounda white blood cell destroying pathogensmucus in the lungs destroying pathogens - 3. Multiple ChoiceWhat do scientists call bacteria and viruses that can make people sick?diseasesvaccinesantibodiespathogens
- 4. Multiple ChoiceJorge has a cold but feels well enough to study with his friends Lisa and Jin. Lisa and Jin become sick. Which term describes Jorge’s condition when he was studying with his friends?noninfectiouscontagiousimmunedeadly
- 5. Multiple ChoiceLiz notices that shortly after cutting her arm accidentally the area around the cut is turning red and feeling hot. Which immune system defense is Liz experiencing?inflammationwhite blood cell clottingskinfever
- 6. Multiple ChoiceDiseases are passed from human to human by these four types of germs:Viruses, influenza, HIV, and vaccinesViruses, bacteria, fungi, and parasitesViruses, cancers, mutagens, and DNAViruses, blood, pollutants, and symptoms
- 7. Multiple ChoiceWhich answer best describes how infectious diseases get transmitted (passed on)?people can sneeze or cough and pass disease on through the airdrinking water can be contaminated with diseasesobjects such as doorknobs and towels can be contaminated by diseaseall of the above answers are ways that diseases are transmitted
- 8. Multiple ChoiceThe human body has both internal and external defense against disease. Which of these includes only internal defenses?hair and inflammationwhite blood cells and sweatinflammation and white blood cellsskin and mucus
- 9. Multiple ChoiceErick wants to avoid exposure to infectious disease as much as possible. Which strategy can best help him do this?eat a balanced dietwash his hands regularlywear sunscreen outsideexercise several days a week
- 10. Multiple ChoiceScientists are testing the effectiveness of 3 different viral medicines (or vaccines) in protecting against the common cold. They sign up 1,200 human volunteers and split them into three groups. So each group of 400 people is given one of the vaccines. The groups are studied for five years and the scientists record how many colds they get each year. What is the dependent variable in this investigation?different viral medicationsthe type of common cold virusthe number of yearsthe number of colds each year
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