Bioaccumulation Study guides, Class notes & Summaries

SDSU Ocean 100 Final SacramentoGrilo Latest Version Already Passed origin of earth • Supernova: death of a star (great explosion) • Supernova happened 4.6 bya, dust and gas flattens to a disk and spins faster due to gravity and solar nebula formed. • Solar Nebula: describes formation of Earth 4.5 bya • Nebula: gas cloud origin of oceans • volcanic explosion, H2O condensed and rained down for thousands of years to create oceans • icy comets hitting earth (respon...

Pest - ANSWER an undesirable organism that injures humans, desirable plants and animals, manufactured products, or natural substances. pathogens - ANSWER disease-causing organisms, such as viruses, bacteria, or fungi Pesticide resistance - ANSWER When pests adapt and become resistant to a pesticide. First seen in resistance to DDT in 1947 bioaccumulation - ANSWER The accumulation of pesticide in the fatty tissue of some animals biomagnification - ANSWER The Food chain. Organ...

Bioaccumulation - ANSWER The accumulation of a substance, such as a toxic chemical, in various tissues of a living organism. Biomagnification - ANSWER Accumulation of pollutants at successive levels of the food chain abiotic factors - ANSWER natural control measures within the environment. EX: climactic factors, air/water pollution, topographic features. Biological Control - ANSWER The use of natural enemies to control pests. EX: Predators, Parasites, Pathogens Cultural Control - A...

PH Unit 3 (final): Vocab latest update A+ graded how a pollutant enters the food chain; the accumulation over time of a chemical in a living organism - bioaccumulation eg: can come from bug spray, roach spray (educate to limit intake of foods or exposure to harmful chemicals) - bioaccumulation process of using medical tests such as blood or urine collection to determine whether a person has been exposed to a contaminant and how much exposure he or she has recei...

C.3 - IB Biology Latest Update 100% Correct Define alien species. a species which arrives in a non-native habitat. Give three examples of alien species. zebra mussels, japanese knotweed, cane toad. Define biological control of invasive species and give an example. the control of an invasive species using another species. RHDV in rabbit population. Define biomagnification and give an example. a process in which chemical substances become more concentrated at each trophic level. ...

Pest Control Exam Questions and Answers Rated A+ Pest an undesirable organism that injures humans, desirable plants and animals, manufactured products, or natural substances. pathogens disease-causing organisms, such as viruses, bacteria, or fungi Pesticide resistance When pests adapt and become resistant to a pesticide. First seen in resistance to DDT in 1947 bioaccumulation The accumulation of pesticide in the fatty tissue of some animals biomagnification The Food chain. Organisms with pes...

Action threshold the pest level at which some type of pest management action must be taken Bioaccumulation The accumulation of toxic substances, such as pesticides, or other organic chemicals in an organism Biomagnification The tendency for certain pesticides to progressively become more concentrated in each type of organism when moving from the bottom to the top organism within a food chain Contact pesticide Pesticide that is not absorbed systemically by treated plants or animals. These...

Bioaccumulation - Answer- The accumulation of a substance, such as a toxic chemical, in various tissues of a living organism. Biomagnification - Answer- Accumulation of pollutants at successive levels of the food chain abiotic factors - Answer- natural control measures within the environment. EX: climactic factors, air/water pollution, topographic features. Biological Control - Answer- The use of natural enemies to control pests. EX: Predators, Parasites, Pathogens Cultural Control...

SDSU Oceanography 100 Final Exam Questions and Answers Already Passed What is the origin of the Earth? Formed out of a solar nebula What are the origins of Life? Archaea - the oldest origin of life on Earth What is kinetic energy? The energy of motion What is heat energy? Energy created by particles of matter rubbing together What is density? A measurement of the amount of matter in a given volume of something. (mass per unit volume) What is convection? Transfer of heat throu...

What led to implementation of HACCP in the meat industry? Jack-in-the-Box 1993 E. coli outbreak Why are molluscan shellfish a specific food safety problem in the seafood industry? Filter feeders = bioaccumulation Common Problems with Seafood 1) Salmonella typhi 2) Vibrio 3) Toxin What bacterial-produced histamines? Marine bacteria metabolizing histine to histamine within the muscle tissues of scrombridae fish --> scrombroid fish poisoning --> similiar to allergic-type response Wh...