Transcript disease
Chapter 13 Communicable Diseases Lesson 1 What Are Communicable Diseases? Click for: >> Main Menu >> Chapter 13 Assessment Teacher’s notes are available in the notes section of this presentation. Next >> disease Any condition that interferes with the normal or proper functioning of the body or mind communicable disease A disease that can be spread to a person from another person, an animal, or an object germs Organisms that are so small they can only be seen through a microscope pathogens Germs that cause disease infection A condition that happens when pathogens enter the body, multiply, and cause harm viruses The smallest and simplest pathogens bacteria Simple one-celled organisms fungi Organisms that are more complex than bacteria but cannot make their own food protozoa One-celled organisms that are more complex than bacteria In this lesson, you will learn to identify types of germs that can cause disease. describe what an infection is. explain how germs are spread. access information on safe drinking water. Organizing Information As you read this lesson, make a list of different ways that pathogens are spread. How Pathogens Are Spread Germs and Disease A disease such as the common cold is a communicable disease. disease Any condition that interferes with the normal or proper functioning of the body or mind communicable disease A disease that can be spread to a person from another person, an animal, or an object Germs and Disease Communicable diseases are spread by germs. germs Organisms that are so small they can only be seen through a microscope Germs and Disease Pathogens are harmful germs. pathogens Germs that cause disease Germs and Disease When the body cannot fight of an infection, a disease develops. infection A condition that happens when pathogens enter the body, multiply, and cause harm Kinds of Pathogens Viruses are not alive. viruses The smallest and simplest pathogens Viruses are usually made of genetic material and protein. Kinds of Pathogens Bacteria exist in every environment on earth. bacteria Simple one-celled organisms Most kinds of bacteria are not only harmless, but actually helpful. Kinds of Pathogens Examples of fungi include molds, yeast, and mushrooms. fungi Organisms that are more complex than bacteria but cannot make their own food Fungi thrive in warm, moist environments. Kinds of Pathogens Many protozoa are harmless, but some can cause disease. protozoa One-celled organisms that are more complex than bacteria Kinds of Pathogens Direct contact with others Contact with animals or insects Indirect contact with others How Pathogens Spread Contact with contaminated food or water Contact with someone else’s blood Sexual contact What’s in a Sneeze? Mosquitoes can infect humans with West Nile Virus. Controlling mosquito populations is one way to help control the spread of West Nile Virus. Lesson 1 Review What I Learned Vocabulary Define communicable disease and pathogen. Write a sentence using both terms. Lesson 1 Review What I Learned Identify What is an infection? Lesson 1 Review What I Learned Give Examples What are three kinds of pathogens? Give an example of a disease caused by each kind. Lesson 1 Review What I Learned Explain Why is it important to clean kitchen cutting boards carefully? Lesson 1 Review Thinking Critically Analyze How does keeping insect populations down help keep people healthy? Lesson 1 Review Thinking Critically Apply Aaron wants a drink of water. He finds a plastic cup on the table but does not know if it has been used or not. Should Aaron use the cup? Explain your answer. End of Chapter 13 Communicable Diseases Lesson 1 What Are Communicable Diseases? Click for: >> Main Menu >> Chapter 13 Assessment