Biology, 05.10.2019 20:30, saucyboyFredo
Aresearcher is designing an experiment to determine whether the production of amylase increases when a person anticipates eating starchy food. she measures the amount of amylase in the saliva of 10 volunteers who are offered a bowl of pasta and of 10 other volunteers who are offered a bowl of scrambled eggs. in analyzing her data, she finds some variation in the amount of amylase among the samples within each group, but no significant difference in the amount of amylase between the two groups. she concludes that she needs to revise her experimental design and try her experiment again. what would be the best thing she could do to improve her experiment?
answer
add at least 30 more volunteers to the group presented with bowls of pasta and keep the number of volunteers in the scrambled egg group the same.
allow one group of volunteers to smell a bowl of pasta while the other group only thinks about it and then test the amount of amylase produced by the two groups.
measure the amount of amylase produced at the sight of a cracker by each volunteer who has just eaten a bowl of pasta.
test the variation in the amount of amylase produced by each individual before and after being presented with a bowl of pasta.
Answers: 1
Biology, 21.06.2019 16:30, abatek28
In fruit flies, gray bodies (g) are dominant over black bodies (g), and brown pigments (n) are dominant over yellow pigments (n). each individual possesses two alleles for each trait. if a fly that is homozygous dominant for both traits is crossed with a fly that is homozygous recessive for both traits, what is the predicted genotype of the offspring.
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Biology, 21.06.2019 20:00, noahmartinez3636
Which of the following is true of microbes? a. ninety-nine percent of all microbes are pathogenic. b. gene expression in bacteria is very similar to gene expression in humans, which facilitates the use of bacteria in recombinant biotechnology and gene therapy. c. all bacterial enzymes are harmful to humans and the environment. d. microbes create pollutants and toxins that harm the environment.
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Biology, 22.06.2019 03:00, cocodemain
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Aresearcher is designing an experiment to determine whether the production of amylase increases when...
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