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Ninth Grade (Grade 9) Circulatory and Immune Systems Questions

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Grade 9 Circulatory and Immune Systems
An antibody is a special protein that helps fight infection.
  1. True
  2. False
Grade 9 Circulatory and Immune Systems
Tuberculosis, meningitis, and hepatitis C are all diseases that are more common in people with HIV or AIDS. This is most likely because healthy people without HIV or AIDS
  1. have a compromised immune system.
  2. are not able to contract these diseases.
  3. can better fight off disease-causing agents.
  4. have been vaccinated against such diseases.
Grade 9 Circulatory and Immune Systems
Certain viruses have constantly mutating surface proteins. Why does this make immunity especially difficult?
  1. Mutating surface proteins make the virus stronger.
  2. Antibodies cannot be recreated for a virus with mutated surface proteins.
  3. Antibodies created for one surface protein may not affect a newly mutated protein.
  4. The immune system has difficulty recognizing the virus after its surface proteins have mutated.
Grade 9 Circulatory and Immune Systems
Which of these fluids are made up mostly of water?
  1. blood
  2. body fluids
  3. lymph
  4. all of the above
Grade 9 Circulatory and Immune Systems
The more you work, the more your heart pumps blood to your body.
  1. True
  2. False
Grade 9 Circulatory and Immune Systems
A T-cell is a red blood cell.
  1. True
  2. False
Grade 9 Circulatory and Immune Systems
What is the liquid found in the bloodstream?
  1. plasma
  2. capillaries
  3. hemoglobin
  4. platelets
Grade 9 Circulatory and Immune Systems
B cells, killer T cells, and helper T cells are all types of
  1. lymphocytes.
  2. macrophages.
  3. pathogens.
  4. phagocytes.
Grade 9 Circulatory and Immune Systems
Cholesterol is a waxy substance associated with
  1. plasma.
  2. lymph nodes.
  3. atherosclerosis.
  4. white blood cells.
Grade 9 Circulatory and Immune Systems
Which statement correctly describes the heart?
  1. It is a hollow organ.
  2. It is a tissue.
  3. It is a nerve.
  4. It is a muscle.
  5. Both a and b
Grade 9 Circulatory and Immune Systems
Blood is composed mostly of
  1. blood, cells, and tissues.
  2. water, marrow, and platelets.
  3. plasma, red blood cells, and platelets.
  4. oxygen, nutrients, and waste.
Grade 9 Circulatory and Immune Systems
Blood clots are the only way that arteries can decrease in blood flow.
  1. True
  2. False
Grade 9 Circulatory and Immune Systems
Which description describes veins?
  1. clear liquid parts of the blood that carry oxygen
  2. blood vessels that carry blood back to the heart
  3. blood vessels that carry blood away from the heart
  4. smallest blood vessels with thin walls for oxygen to pass through
Grade 9 Circulatory and Immune Systems
Which of these contains dissolved nutrients?
  1. plasma
  2. platelets
  3. tissue
  4. villi
Grade 9 Circulatory and Immune Systems
What is the main function of the red blood corpuscles in the blood?
  1. fight disease
  2. clot blood
  3. transport carbon dioxide to the body's cells and carry away oxygen from the cells
  4. transport oxygen to the body's cells and carry away carbon dioxide from the cells
Grade 9 Circulatory and Immune Systems
Small cell fragments that aid in blood clotting are called platelets.
  1. True
  2. False
Grade 9 Circulatory and Immune Systems
After leaving the heart, blood passes through the
  1. ligaments.
  2. veins.
  3. arteries.
  4. capillaries.
Grade 9 Circulatory and Immune Systems
What does a carcinogen cause?
  1. cancer
  2. diabetes
  3. flu
  4. measles
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