BIOL 2030 ACTUAL TEST PAPER QUESTIONS AND
ANSWERS SET A+
✔✔Based strictly on increases in air pollution over the past few decades, where would
we expect to see the greatest decrease in life spans? We would expect to see a
decrease in life span in __________. - ✔✔Beijing, China
✔✔Which of the following describes the greatest health risk posed by air pollution? Air
pollutants __________. - ✔✔damage blood vessels in human lungs
✔✔Warren Porter compares the costs and benefits of current industry testing practices.
Which of the following statements does he include as a benefit of the current approach?
- ✔✔Leads to greater economic activity
✔✔A child enters the pediatrician's office with symptoms that include anemia, hearing
loss, kidney, and stomach problems. The family has just recently moved into a 50-year-
old home and is doing renovations. What might be the problem with this child? - ✔✔lead
poisoning
✔✔Which of the following types of hazards spread quickly worldwide because of human
mobility - ✔✔biological hazards
✔✔Which term describes a type of toxicant that can cause cancer? - ✔✔carcinogens
✔✔Why are insecticides (such as DDT) used in developing countries despite being
banned in many developed countrie - ✔✔They are used because the benefits to human
health are believed to outweigh the environmental costs.
✔✔In many waterways around the United States, poly-chlorinated biphenyls (PCBs)
have contaminated the sediments and wildlife. Given that most of the PCBs in the
environment were released before 1980 and are still present in these ecosystems,
which best describes this phenomenon? - ✔✔long persistence
, ✔✔How do endocrine disruptors affect human health at very low doses? - ✔✔they
mimic or block hormones that direct reproductive and developmental processes
✔✔Biomagnification - ✔✔accumulation of pollutants at successive levels of the food
chain
✔✔A _____ LD50 indicates low toxicity while a _____ LD50 indicates high toxicity. -
✔✔high; low
✔✔Which types of experiments are needed to establish that a certain toxicant actually
causes a particular disease? - ✔✔manipulative
✔✔The "precautionary principle approach" to chemical testing ______________ -
✔✔prevents products from entering the marketplace until well tested
✔✔According to island biogeography, what is the relationship between an island's
distance from the mainland and the number of species present on the island? - ✔✔The
farther an island is from the mainland, the fewer the number of species found on the
island.
✔✔Why is a new island more hospitable to colonizers than an older island is? - ✔✔the
intensity of both competition and predation is less on the newer island.
✔✔What is the relationship between colonizing success and the number of species
already established on an island? - ✔✔As the number of established species on an
island increases, colonizing success decreases.
✔✔The number of species on an island remains relatively constant when _____. -
✔✔the rate of successful colonization equals the extinction rate
✔✔the rate of successful colonization equals the extinction rate - ✔✔the rate of
successful colonization equals the extinction rate
✔✔According to Gary Sirota, the proposed Bajagua wastewater treatment plant is a
beneficial solution because __________. - ✔✔all contractual obligations must be met
before service fee is due
✔✔Serge Dedina suggests that the private sector is best suited for __________. -
✔✔providing innovative wastewater treatment technology for informal housing
settlements throughout Tijuana
ANSWERS SET A+
✔✔Based strictly on increases in air pollution over the past few decades, where would
we expect to see the greatest decrease in life spans? We would expect to see a
decrease in life span in __________. - ✔✔Beijing, China
✔✔Which of the following describes the greatest health risk posed by air pollution? Air
pollutants __________. - ✔✔damage blood vessels in human lungs
✔✔Warren Porter compares the costs and benefits of current industry testing practices.
Which of the following statements does he include as a benefit of the current approach?
- ✔✔Leads to greater economic activity
✔✔A child enters the pediatrician's office with symptoms that include anemia, hearing
loss, kidney, and stomach problems. The family has just recently moved into a 50-year-
old home and is doing renovations. What might be the problem with this child? - ✔✔lead
poisoning
✔✔Which of the following types of hazards spread quickly worldwide because of human
mobility - ✔✔biological hazards
✔✔Which term describes a type of toxicant that can cause cancer? - ✔✔carcinogens
✔✔Why are insecticides (such as DDT) used in developing countries despite being
banned in many developed countrie - ✔✔They are used because the benefits to human
health are believed to outweigh the environmental costs.
✔✔In many waterways around the United States, poly-chlorinated biphenyls (PCBs)
have contaminated the sediments and wildlife. Given that most of the PCBs in the
environment were released before 1980 and are still present in these ecosystems,
which best describes this phenomenon? - ✔✔long persistence
, ✔✔How do endocrine disruptors affect human health at very low doses? - ✔✔they
mimic or block hormones that direct reproductive and developmental processes
✔✔Biomagnification - ✔✔accumulation of pollutants at successive levels of the food
chain
✔✔A _____ LD50 indicates low toxicity while a _____ LD50 indicates high toxicity. -
✔✔high; low
✔✔Which types of experiments are needed to establish that a certain toxicant actually
causes a particular disease? - ✔✔manipulative
✔✔The "precautionary principle approach" to chemical testing ______________ -
✔✔prevents products from entering the marketplace until well tested
✔✔According to island biogeography, what is the relationship between an island's
distance from the mainland and the number of species present on the island? - ✔✔The
farther an island is from the mainland, the fewer the number of species found on the
island.
✔✔Why is a new island more hospitable to colonizers than an older island is? - ✔✔the
intensity of both competition and predation is less on the newer island.
✔✔What is the relationship between colonizing success and the number of species
already established on an island? - ✔✔As the number of established species on an
island increases, colonizing success decreases.
✔✔The number of species on an island remains relatively constant when _____. -
✔✔the rate of successful colonization equals the extinction rate
✔✔the rate of successful colonization equals the extinction rate - ✔✔the rate of
successful colonization equals the extinction rate
✔✔According to Gary Sirota, the proposed Bajagua wastewater treatment plant is a
beneficial solution because __________. - ✔✔all contractual obligations must be met
before service fee is due
✔✔Serge Dedina suggests that the private sector is best suited for __________. -
✔✔providing innovative wastewater treatment technology for informal housing
settlements throughout Tijuana
