Answers: 1
Biology, 22.06.2019 02:00
Bisphenol a (often called bpa) is a chemical found in products that people use every day, from water bottles to food containers to children's toys. unfortunately, bpa leaches out of its many products and makes its way into our bodies. what are the health effects of bpa exposure? ongoing research is finding that elevated exposure to bpa can affect a wide variety of developmental and physiological processes, but one of the first studies of bpa's health effects came about because of a simple mistake in the lab. at a laboratory at case western reserve university in 1998, geneticist patricia hunt was making a routine check of her female lab mice. as she extracted and examined developing eggs from the ovaries, she began to wonder what had gone wrong. she noticed that many of the eggs showed problems with their chromosomes, and some had irregular amounts of genetic material, which can lead to miscarriages and birth defects in mammals. she learned that a lab assistant had mistakenly washed the plastic mouse cages and water bottles with a harsh soap, releasing bpa from the plastic. knowing that bpa is an endocrine disruptor, a chemical that can enter organisms and mimic hormones, hunt set out to discover whether it had adversely affected her mice.
Answers: 2
Biology, 22.06.2019 15:30
Ascientist is designing an investigation to study the impact of invasive bird populations on local, native bird populations at backyard bird feeders. what population is most likely to be a control group for the investigation? amount of food number of bird feeders invasive bird populations local backyard birdfeeders without food
Answers: 1
Biology, 23.06.2019 06:00
10. how is it that a code consisting of only four letters (a, t, g, c) can contain instructions for all the different parts of an organism and account for the diversity of organisms on this planet?
Answers: 1
How do massive stars change the atmosphere?...
History, 02.02.2021 01:30
Geography, 02.02.2021 01:30
Mathematics, 02.02.2021 01:30
History, 02.02.2021 01:30
Chemistry, 02.02.2021 01:30
Mathematics, 02.02.2021 01:30
English, 02.02.2021 01:30
Mathematics, 02.02.2021 01:30
Mathematics, 02.02.2021 01:30
Mathematics, 02.02.2021 01:30
Mathematics, 02.02.2021 01:30
English, 02.02.2021 01:30
Mathematics, 02.02.2021 01:30
Mathematics, 02.02.2021 01:30