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Ninth Grade (Grade 9) Circulatory and Immune Systems Questions

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Grade 9 Circulatory and Immune Systems
The lymphatic system primarily serves to
  1. open two-way vessels.
  2. help the body fight infections.
  3. interact with the respiratory system.
  4. transport fluids away from the heart.
Grade 9 Circulatory and Immune Systems
Which cells make and release antibodies into the human bloodstream?
  1. plasma cells
  2. helper T cells
  3. macrophages
  4. cytotoxic T cells
Grade 9 Circulatory and Immune Systems
What is the heart?
  1. an organ with four chambers that pumps blood
  2. a small blood vessel that connects veins to the lungs
  3. a large blood vessel that connects the lungs to the reproductive organs
  4. an organ that filters wastes and can produce urea
Grade 9 Circulatory and Immune Systems
Antibodies recognize and bind to
  1. B cells.
  2. T cells.
  3. antigens.
  4. plasma cells.
Grade 9 Circulatory and Immune Systems
Red blood cells carry oxygen.
  1. True
  2. False
Grade 9 Circulatory and Immune Systems
Some bacteria produce poisons called
  1. histamines.
  2. pathogens.
  3. phagocytes.
  4. toxins.
Grade 9 Circulatory and Immune Systems
The pulmonary artery is a major blood vessel that carries blood to the lungs for gas exchange. In what way is the pulmonary artery different from other arteries?
  1. It carries blood towards the heart, while most arteries carry it away from the heart.
  2. It carries blood away from the heart, while most arteries carry it towards the heart.
  3. It carries deoxygenated blood, while most arteries carry oxygenated blood.
  4. It carries oxygenated blood, while most arteries carry deoxygenated blood.
Grade 9 Circulatory and Immune Systems
How does the human immune system distinguish between healthy body cells (self) and viruses or bacteria (non-self)?
  1. Healthy body cells do not have antigens.
  2. Unlike invaders, healthy body cells contain DNA.
  3. Viruses and bacteria have antigens on their surface.
  4. Viruses and bacteria are much larger than healthy body cells.
Grade 9 Circulatory and Immune Systems
What component of blood carries oxygen in the blood?
  1. albumin
  2. hemoglobin
  3. leukocytes
  4. platelets
Grade 9 Circulatory and Immune Systems
When you are sick,                   help you get better by attacking viruses or bacteria.
  1. white blood cells
  2. red blood cells
  3. platelets
  4. plasma
Grade 9 Circulatory and Immune Systems
What is a capillary?
  1. a lower chamber of the heart
  2. a virus that causes disease
  3. a small blood vessel that provides connectivity between veins and arteries
  4. a blood vessel that moves blood away from the heart
Grade 9 Circulatory and Immune Systems
What are three things blood does for the body?
  1. keeps it warm, moves the bones, signals shock
  2. keeps it warm, brings nutrients to the body, moves oxygen
  3. brings nutrients, moves the bones, signals shock
  4. moves oxygen, brings nutrients to the body, signals shock
Grade 9 Circulatory and Immune Systems
How many ventricles does the human heart contain?
  1. 3
  2. 2
  3. 4
  4. 1
Grade 9 Circulatory and Immune Systems
What is a lymph node?
  1. an organ located on the right side of the abdomen that gets rid of foreign species and agents
  2. a white blood cell
  3. a platelet
  4. a structure that filters lymph and destroys pathogens
Grade 9 Circulatory and Immune Systems
What produces antibodies?
  1. B cells
  2. pathogens
  3. phagocytes
  4. T cells
Grade 9 Circulatory and Immune Systems
Which statement accurately describes the primary function of red blood cells, or erythrocytes?
  1. to transport oxygen to and carbon dioxide away from cells in the body
  2. to defend the human body from germs, viruses, and bacteria
  3. to produce various clots
  4. to transport nutrients to various organs
Grade 9 Circulatory and Immune Systems
The lymphatic system is a closed circuit.
  1. True
  2. False
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