All living organisms are classified into one of three domains: bacteria, archaea, and eukarya. compare and contrast the domains bacteria and archaea. how are they alike? how are they different? a) they are both composed of prokaryotic organisms. bacteria are parasites and archaea are free-living. b) both domains contain parasitic organisms composed of one cell. the archaea are the disease-causing parasites. c) they are both composed of prokaryotic organisms. the archaea live in very extreme environments, like hot springs, but the bacteria do not. d) both are unicellular, prokaryotes. the archaea live as parasites while the bacteria live in extreme environments, like the salt flats and hot springs.

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.

What maintain homeostasis when a persons internal body temperature is 97.5°f

Which statement best describes the first stage of cellular respiration? check all that apply