Biology 30 unit 1 (SK,Canada) Exam Questions And Answers

Biology - ANS the study of life definition of Life/ why so hard to define? - ANS An organic entity to grow, reproduce, move, metabolize, consume organic material & respond to stimuli. It's so diverse. Major classifications of living things - ANS Animals, Plants, Fungi, Protists, Prokaryotes, Viruses Agent X -Virus - ANS smaller than a virus, triggers over production virus PCV2, causing wasting of tissues in piglets. Cretzfeld-Jakob Disease - ANS "Mad Cow Disease" rapid deterioration in brain tissue. Eloba Virus - ANS causes internal bleeding, vomiting, fever = Nearly became a pamdemic H1N1 Virus - ANS flu virus flu like symptoms but with a more serious fever HIV Virus - ANS Aids -attacks immune system destroying the body's ability to fight off disease. Life as a cycle: - ANS all living things have a life span. longevity of a multicellular vs. unicellular organism - ANS multicellular organism- live from a day to a millennium (Plants, Animals, Fungi) unicellular organism- reproduces 2 new cells identical to the original..."cloning" (Protisits and Prokaryotes) Differentiation - ANS specialization of a cell for the purpose of the better function *price of specialization is morality Hayflick Limit - ANS the # of cellular divisions a differentiation cell can go through before it dies. Stem Cells - ANS undifferentiated cells that can become any type of cell in the body. Allows body to make new cells to replace ones that are needing replacement *Immortal Medicine - ANS Practice of diagnosing & treating illnesses Physical Exam - ANS checkout, testing areas of body plus questioning Xray - ANS Photo of inside the body using high frequency light. -for viewing bones, dense tisusse organs CAT or CT scan - ANS Xray cross sections of the body creating a 3D image -views bones, injuries & brain problems Radiotracers - ANS Like sugar but gives off positrons to be detected by sensors MRI - ANS Strong magnetic field making hydrogen atoms "align" then uses radio waves to change alignment -views soft tisusse Ultrasound - ANS High frequency waves sent into body & reflected back -views soft tisusse and REAL TIME MOTION Endoscope - ANS Fiber optic cables that transmit light images from inside the body. -views body system and joints Diagnostic Imaging - ANS Technologies that doctors use to look inside your body for clues about a medical condition; includes X-rays, CT scans, PET scans, Endoscope, Radiotracers,MRI scans and ultrasound. Pressure Tests - ANS Measures pressure and pressure change ex. blood pressure Stress Test - ANS Physical or Chemical checks to see if the system responds normally Blood Tests - ANS Tests for levels in chemicals in blood to determine many diseases. Other chemical analyeses - ANS tests similar to blood tests ex. hair, skin, urine... Genetic Analysis - ANS Analyes DNA to see if there is a genetic illness/disease Occupational methods - ANS Looks at life to see if their life style is causing them to have problems Forensic Science - ANS Autopsy, looking at dead people to determine death *police use often during murders Biopsies - ANS Taking a sample of tisusse & analysing it to determine illness Prevention - ANS Trying to change environment/ behavior so there is no problem. *involves educating and regulating people Nutritional Therapy - ANS Diet to keep healthy or regulate problems Herbalism - ANS Study of plants & how they can help your body * the root of medicine Naturopathy - ANS Body healing itself naturally, no drugs or surgery Nutriceuticals - ANS Food supplements that supply nutrients Pharmaceuticals - ANS Drugs that have been tested & have passedd the FDA regiment *more is not better Drug Therapy - ANS Most common. Giving a drug to treat a problem