Robert Koch was a trained ________ who initially developed a lot of his germ theory of disease by studying bacteremia of ________
a. chemist / Bacillus anthracis
b. chemist / Mycobacterium tuberculosis
c. physician / Bacillus anthracis
d. physician / Mycobacterium tuberculosis
Answer: C
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During the cleavage stage of glycolysis, fructose-1, 6 biphosphate is broken down into
A. two molecules of ATP. B. citric acid. C. two molecules of glyceraldehyde-3-phosphate. D. two molecules of pyruvate. E. glucose.
A hypothesis is typically stated as an "If . . . then" statement
Indicate whether the statement is true or false
A population of plants comes in two flower colors: blue and white. Crossing two blue-flowered plants produces mostly blue-flowering offspring and some white-flowering offspring
Crossing two white-flowered plants produces only white-flowering offspring. This indicates that the white-flowering plants are A) homozygous dominant for the flower color allele. B) homozygous recessive for the flower color allele. C) mutating. D) heterozygous for the flower color allele. E) in equilibrium.
A scientist wants to examine living cells lining the respiratory tract to determine how the cells use tiny hairs to move dirt and mucus away from the lungs. Which of the following instruments would be best, and why?
A) a light microscope, because it allows observations of whole, live cells B) a transmission electron microscope, because it has high resolution C) a scanning electron microscope, because it can reveal structures on cell surfaces D) a scanning electron microscope, because it can be used to observe whole cells without slicing them