Minerals that crystallize in the renal pelvis are referred to as
A) kidney stones.
B) pelvic crystals.
C) otoliths.
D) osteocytes.
E) renal deposits.
A
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Which of the following is TRUE about the crenarchael genera Sulfolobus?
A) Sulfolobus grows in sulfur-rich hot alkaline springs. B) Sulfolobus is an anaerobic chemolithotroph. C) Sulfolobus can grow chemoorganotrophically. D) Sulfolobus is a gram-positive rod.
"Plan B", the most widely used emergency contraceptive, delivers a large dose of which hormone?
a. estrogen b. luteinizing hormone c. oxytocin d. progesterone e. prolactin
Mutations of trpL decrease the efficiency of transcriptional regulation by disrupting the formation of which stem-loop structure?
What will be an ideal response?
Which description best supports the endosymbiotic theory of organelles?
A. Eukaryotic cells acquired mitochondria and plastids by engulfing free-living bacteria and developed a symbiotic relationship with them. Mitochondria were derived from aerobic bacterium while chloroplasts were derived from cyanobacterium. B. Eukaryotic cells acquired mitochondria and flagella by engulfing free-living bacteria and developed a symbiotic relationship with them. Mitochondria were derived from aerobic bacterium while flagella were derived from motile bacteria. C. Eukaryotic cells acquired mitochondria and plastids by engulfing free-living bacteria and developed a symbiotic relationship with them. Mitochondria were derived from anaerobic bacterium while chloroplasts were derived from aerobic bacterium. D. Eukaryotic cells acquired nuclei and flagella by engulfing free-living bacteria and developed a symbiotic relationship with them. Nuclei were derived from aerobic bacterium while flagella were derived from motile bacteria.