Members of the order Desulfovibrionales use which of the following as electron acceptors during anaerobic respiration?
A. Organic acids and alcohols
B. CO2
C. O2
D. Elemental sulfur or sulfate
Answer: D
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What element is in the cell walls of grasses and horsetails, which gives them such a sharp, cutting edge, like a piece of glass?
a. carbon b. silicon c. chlorine d. boron e. nitrogen
Trichonympha is a unicellular flagellated protist that lives within termites and allows the termite to be able to "digest" wood. Trichonympha is classified as
A. a detritovore. B. a heterotroph and autotroph. C. an autotroph. D. a heterotroph and detritovore. E. a heterotroph.
How did mitochondria and chloroplasts arise in eukaryotic cells?
A) Via endosymbiosis, where mitochondria and chloroplasts were independent prokaryotic organisms that were engulfed by a larger cell B) Via binary fission, where bacteria divided to create mitochondria and chloroplasts C) Via the endomembrane system that engulfed mitochondria and chloroplasts D) Via the endomembrane system that enfolded in such a way as to create mitochondria and chloroplasts
Glycogen is converted to acid in the vagina by (Lactobacilli/Streptococci/yeast), thereby contributing to an acidic pH in that area
What will be an ideal response?