Tiny, non-living particle that invade and multiples incise a living cell
a living thing that provides a source of energy for a virus/organism
organism that lives on or in a host and causes it harm
a virus that infects bacteria "bacteria eater"
Enter cells and immediately begin to multiply -leading to the quick death of the invaded cells.
"hide" for a while inside the host before becoming active (i.e. cold sore)
Can be spread through contact with a contaminated object, bite, air drops, body fluids
Treating Viral Diseases
Rest, fluids, well-balanced meals
A substance to prevent viral diseases - substance is introduced to simulate the production of chemicals that destroy specific viruses.
Made from weakened or altered virus - trigger the body's natural defenses
Genetic material is not contained in the nucleus
long, whiplike structure that helps a cell tomove
How Bacteria Survive
Must have a source of food and a way to break down food to release energy:
Most bacteria do not need oxygen, some die in the presence of oxygen
Must have plenty of food, the right temperature, and other suitable conditions to thrive and reproduce
one cell (bacteria) divides to form two identical cells - a type of asexual reproduction
Reproductive process involving only one parent cell and producing offspring that are identical to the parent
two parent (cells) combine their genetic material to produce a new organism, which differs from both parents
One bacterium transfers some genetic material to another bacterium through a threadlike bridge - transfer then separate
A small, rounded, thick-walled, resting cell that forms in side a bacterial cell: contains the cell's genetic material and some of its cytoplasm- can resist freezing, heating, drying
Roles of Bacteria in Nature
Oxygen production, Food production (cheese, yogurt), Environmental Recycling (decomposers), Environmental Clean up, Health and Medicine (digestion, insulin)
A scientist who studies an unusual occurrence of a disease
Bacteria/Organisms that break down large chemicals in dead organisms into small chemicals.