Biology, 24.05.2021 18:10, Shelleycarousel
As part of a larger study of the effects of amphetamines, a pharmacologist wished to investigate the claim that amphetamines reduce overall water consumption. She injected 25 standard lab rats with an appropriate dose of amphetamine and 30 with a saline solution as controls. Over the next 24 hours she measured the amount of water consumed by each rat and expressed the results in ml/kg body weight:
saline amphetamine
n 9 16
X 134.1 112
s 16 35.6
Does the amphetamine significantly suppress water consumption? What is the null hypothesis?
a. x-saline = X-amphetamine
b. mu-saline = mu-amphetamine
c. x-saline < X-amphetamine
d. mu-saline
Answers: 3
Biology, 22.06.2019 10:00, kyleighkinler5647
Which is an example of a vestigial structure? a. tail of a monkey b. fin of a fish c. flower of a plant d. tailbone of a human
Answers: 2
Biology, 22.06.2019 14:00, michellemonroe012305
True or false: (a) the strings of little red dots represent carbohydrates. (b) the model is called a bilayer because there are two main types of molecules present, lipids and proteins. (c) the many black lines represent amino acid tails. (d) this model shows membrane transport. (e) the blue ovals are hydrophobic. (f) the blue ovals represent phospholipid heads.
Answers: 1
Biology, 22.06.2019 14:30, maggie9459
Alexa is preparing for a presentation by creating note cards identifying keywords that describe various features of each type of plate boundary. which words apply to all three of the convergent boundaries?
Answers: 2
As part of a larger study of the effects of amphetamines, a pharmacologist wished to investigate the...
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