Transcript Unit C Key Terms C31-The Range of Disease

Unit C Key Terms
C31-The Range of Disease
 Disease-a breakdown in the structure or
function of a living thing
C30-It’s Catching!
 Infectious-disease that is caused by a
pathogen that invades the body
(bacterium, virus, fungus, protist)
C33-From One to Another
 Carrier-a person that carries a disease
but never develops symptoms
C33-From One to Another
 Quarantine-forced isolation of people to
prevent the spreading of disease
C33-From One to Another
 Vector-organism (other than a person)
that spreads disease-causing pathogens
C37-The History of the
Germ Theory of Disease
 Germ theory of disease-the idea that
diseases are caused by microbes
(“germs”)
Introduction to Cells
 Cell- “the building block of life;” the
smallest unit of structure and function in
an organism
Introduction to Cells
 Cell theory-statement of scientific
knowledge about cells:
 (1) All living things are made of cells.
 (2) All cells come from other cells.
 (3) Cells are the basic unit of structure and
function in living things.
Cellular Organization
 Organism-living thing
C41-A Cell So Small
 Unicellular-organism made of one cell
(examples: bacteria, protists, yeast)
C41-A Cell So Small
 Multicellular-organism made of more than
one cell (examples: plants, animals)
C35-A License to Learn
 Magnify-to make an object appear larger
C42-A Closer Look
 Organelle-small structure that does a
special job for the cell
C42-A Closer Look
 Cell membrane-part of ALL cells that
separates the cell from the environment
and controls what moves in and out of
the cell
C42-A Closer Look
 Cytoplasm-jelly-like material that fills the
inside of ALL cells
C42-A Closer Look
 Nucleus-part of some cells that is the
“control center” of the cell and directs cell
activities
C44-Who’s Who?
 Microbe-microscopic structure that often
causes disease (virus, bacterium, protist)
C44-Who’s Who?
 Classify-to put things into groups based
on what they have in common
C45-The World of
Microbes
 Bacteria-microscopic single celled
organism without a nucleus
C45-The World of
Microbes
 Protist-microscopic single celled
organism with a nucleus
C45-The World of
Microbes
 Virus-microscopic non-living structure
that often causes disease
C47-Reducing Risk
 Petri dish-equipment used to grow
microbes
C49-An Ounce of
Prevention
 Antibiotic-chemical that kills bacteria
C49-An Ounce of
Prevention
 Vaccination-medicine that can prevent
disease by “training” the immune system
to fight its cause
C51-The Full Course
 Full course-the length of a prescription
for an antibiotic
C51-The Full Course
 Infection-when the body is invaded by a
pathogen
C51-The Full Course
 Resistant-bacteria that is not easily killed
by an antibiotic
C53-Modern Outbreaks
 Emerging disease-a disease that is new
in the human population