Biology, 18.09.2021 01:00, chloesmolinski0909
How is the cell membrane selectively permeable?
a. The cell membrane allows particles to freely move across the membrane.
b. The cell membrane chooses what will enter and leave the cell.
C. The cell membrane chooses only what will leave the cell.
d. The cell membrane chooses only what will enter the cell.
Answers: 3
Biology, 22.06.2019 02:00, mathman783
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 07:30, alejandra216
Ture or false evidence for evolution includes millions of fossils
Answers: 1
Biology, 22.06.2019 08:20, jholland03
Which of these parts of the membrane large moecules pass through it ?
Answers: 1
How is the cell membrane selectively permeable?
a. The cell membrane allows particles to freely mo...
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