A lung specimen from a pneumonia patient contains Gram-negative bacilli. Laboratory test results on the bacteria show they are non-motile coliforms with a thick capsule. Which pathogen is the likely cause of the pneumonia?
A. Escherichia coli
B. Enterobacter
C. Hafnia
D. Klebsiella
E. Serratia
Answer: D
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During glycolysis, glucose molecules are broken down by breaking the carbon-hydrogen bonds that are present and
forming carbon-oxygen bonds. In this process, glucose is ____.
a. partially oxidized b. partially reduced c. completely oxidized d. completely reduced e. hydrolyzed
The brain can infer the pitch of a sound from the:a
number of hair cells that are stimulated. b. particular hair cells that are stimulated. c. intensity with which the hair cells are stimulated. d. intensity of the action potential produced by the stimulated hair cells. e. fluid movements of the semicircular canals.
One ____ is the amount of energy needed to raise the temperature of one kilogram of water one degree Celsius.
A. calorie B. Calorie C. gram cal D. kilogram calorie
Hybridization regularly occurs between three species of Darwin's finches on Daphne Major, but the finches are still considered different species because
A. they are mechanically isolated. B. they have different fitnesses. C. they are reproductively isolated. D. they occupy different niches.