2 Biohazard Flashcards
What is a biohazard?
A biological hazard or “bio-hazard” is a toxic or infectious agent that poses a threat to human when it is eaten, inhaled, or comes in contact with skin.
examples of biohazards include
organisms like viruses, parasites, bacteria, yeast or mold spores.
biohazards require?
are living organism, they need oxygen, food, water, and a place to live. All of these are found in our food and in our bodies.
Main cause of foodborne disease is
biological hazard
viruses are complicated assemblies of what?
complicated assemblies of molecules, including proteins, nucleic acids, lipids, carbohydrates,
Viruses infect and cause harm. When are they dangerous?
-Only when it enters into a living cell, then causes harm
-without which can not multiply
-therefore, not living things
common way a virus can entre the body ?
-infected person hands or body fluid like saliva/ blood
Hepatitis A is a ___ associated with ___
virus example
with human intestial tract
where can contract Hepatitis A & what effective way to reduce risk?
-contaminated food or water
-food water prepared by infected person
-need personal hygiene, washing hands most effective way to reduce risk
what are parasites
organising that derive nourishment and protection from other living org (hosts)
-single cell to worms visible to naked eye
Taxoplasma godii is what
food borne parisite
can cause hospitaliztion or death,
roundworms- thichina (trichinella spiralis) is what
and what is the carrier that would cause infection to humans?
parisite
consuming infected pork can cause trichinosis in humans
name common parasites that cause foodborne diseases
-roundworm- thichina (hogs) & Anisakis- (cod or herring)
-flatworms- tapeworm (beef, pork. fish) & flukes (liver fluke)
-Protoza -infected water
Parasites may be tranmitted from host to host through?
-consumption of contaminated food and water
-soil
-person to person
-putting anything into your mouth that has touched the
-stool of an infected person or animal.
All life need bacteria,
-most comon organism on earth
-w/o life cannot be maintained