Biomagnification - Study guides, Class notes & Summaries

PA Pesticide Applicator Exam CoBioaccumulation - 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, Pa...

Study Guide: Pest Control Exam [100% Correct] Pest *Ans* an undesirable organism that injures humans, desirable plants and animals, manufactured products, or natural substances. pathogens *Ans* disease-causing organisms, such as viruses, bacteria, or fungi Pesticide resistance *Ans* When pests adapt and become resistant to a pesticide. First seen in resistance to DDT in 1947 bioaccumulation *Ans* The accumulation of pesticide in the fatty tissue of some animals biomagnification ...

Federal Food, Drug, and Cosmetics Act (FFDCA) - called for reassessing existing tolerances and tolerance exemptions to ensure that they meet the legal safety standard. They govern the establishment of pesticide tolerances for food and feed products Repellents - repel insects, mites, ticks, pest vertebrates, invertebrates, birds, and mammals. Applied Controls - When humans try to eliminate pests. 1. Biological Control 2. Chemical control 3. Cultural Control 4. Genetic control 5. Mechani...

Biology 104 Chapter 1 exam solved 100% Bioaccumulation -Correct Answer-Selective absorbtion and strorage of a great variety of molecules. This allows the accumulation of vitamins and minerals but at the same time can absorb harmful substances. Even though certain material are dilute in the environment, they can reach dangerous levels inside cells and tissues through bioaccumulation. Biomagnification -Correct Answer-Occurs when the toxic burden of a large number of organisms at a lower tropic...

Pesticide applicators License Latest Update Rated A+ 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 abso...

Pesticide applicators License Latest Update Rated A+ 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 ...

Contemporary Issues in Biology Final ~ TCU, Sawey Exam Questions and Answers how long have homo-sapiens been on earth - Answer- thought to be 200,000 years, starting in ethiopia mutation - Answer- change in nucleotide in the base of DNA; not all harmful; passed down in generations of that descent when did humans establish themselves worldwide - Answer- 12,000 years ago; before humans and agriculture coincided how did humans live before agriculture - Answer- used tools (needles, spears, c...

Biomagnification correct answer: Biological concentration; The tendency for some substances to concentrate with each trophic level. - toxic substances become increasingly concentrated within living organisms as they move up each step of the food chain. Point Source correct answer: Sources of pollution such as smokestacks, pipes, or accidental spills that are readily identified and stationary Non-Point source correct answer: These are diffuse sources of pollution such as urban runoff ...

PA Pesticide Applicator Exam Core Info Exam Real Questions & Verified Solutions 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 en...

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. ...