How much energy is required to raise the temperature of one kilogram (liter) of water 1°C?
a. 10 calories
b. 100 calories
c. 1 kilocalorie
d. 10 kilocalories
e. 100 kilocalories
ANS: C
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A healthy body needs and uses glucose as its primary energy nutrient.
a. true b. false
According to Bernoulli's Principle, where will a gas flowing through a pipe exert the least amount of pressure?
A. where the pipe is widest B. where the pipe is narrowest C. where its velocity is lowest D. where its kinetic energy is lowest
The use of selective breeding in human agriculture: a. is a very recent scientific concept
b. involves crossing boundaries between species. c. can involve analysis of DNA from successful seedlings. d. is successful only in plants. e. involves selecting the least successful farm animals and plants for breeding with more successful ones.
What is the chief risk factor for Alzheimer's disease?
a. Age b. Gender c. Low antioxidant intake d. Body weight after age 70