Immune System

 Like 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 disease
• it breaks down food to provide cells with nutrients
• it gathers information through the senses and controls all other body systems
•  it transports oxygen and carbon dioxide

Tags

NGSS.HS-LS1-3

What do scientists call bacteria and viruses that can make people sick?  

• diseases
• vaccines
• antibodies
• pathogens

Jorge 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?  

• noninfectious
• contagious
• immune
• deadly

Diseases are passed from human to human by these four types of pathogens:

• Viruses, influenza, HIV, and vaccines

• Viruses, bacteria, fungi, and parasites

• Viruses, cancers, mutagens, and DNA

• Viruses, blood, pollutants, and symptoms

Which answer best describes how infectious diseases get transmitted (passed on)?  

• people can sneeze or cough and pass disease on through the air
• drinking water can be contaminated with diseases
• objects such as doorknobs and towels can be contaminated by disease
• all of the above answers are ways that diseases are transmitted

The human body has both internal and external defense against disease.  Which of these includes only internal defenses?  

• hair and inflammation
• white blood cells and sweat
• inflammation and white blood cells
• skin and mucus

Erick wants to avoid exposure to infectious disease as much as possible.  Which strategy can best help him do this?  

• eat a balanced diet
• wash his hands regularly
• wear sunscreen outside
• exercise several days a week

Anything that triggers an immune response is a/n

• lymph cell
• antigen
• antibody
• neutrop

Antibiotics work against most

• Bacteria
• Bacteria & Viruses
• Vaccines
• Viruses

Vaccinations are used for

• Curing the illness
• Preventing the Illness
• Getting the illness