You conduct an experiment on twenty 18-year-old female subjects to see how various intensities of exercise influence heart rate. Which of the following is/are considered an independent variable?
age of subjects
gender of subjects
more than one of these
intensity of exercise
heart rate
Answers: 2
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 09:00
What should be the strand of complementary dna produced by the strand of dna shown below cgt ata
Answers: 1
Biology, 22.06.2019 09:20
Organize the word parts according to where they appear in a medical term.
Answers: 1
You conduct an experiment on twenty 18-year-old female subjects to see how various intensities of ex...
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