An example of purple photosynthetic bacteria metabolic flexibility is seen in Rhodospirillum rubrum using a "decision-making" process; in oxic conditions, the bacterium uses fermentation, photoheterotrophy, or photoautotrophy versus when oxygen is not present that the photosynthetic apparatus is used to grow chemoorganotrophically.
Answer the following statement true (T) or false (F)
False
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Which organism, which is oxidase positive, does not grow on TCBS agar, has the ability to decarboxylate lysine and ornithine but cannot utilize arginine, and would have the following co-lonial characteristics on sheep blood agar and MacConkey agar?
a. <-hemolytic and is a nonlactose fermen-ter b. <-hemolytic and is a lactose fermenter c. <-hemolytic and is a nonlactose fermen-ter d. <-hemolytic and is a nonlactose fermenter
Which of the following would have the most difficulty entering a water lattice?
a. table salt (NaCl) b. a nonpolar molecule c. a sodium ion d. a proton (H+) e. an electron
Which of the following best describes cnidarians?
A) They are asymmetrical and have tissues and stinging cells. B) They have radial body symmetry, lack tissues, but have stinging cells. C) They have radial body symmetry, tissues, and stinging cells. D) They have radial body symmetry and tissues but lack stinging cells.
Escherichia coli O157:H7 produces (cholera/Shiga/Staphylococcal)-like toxin, which inhibits protein synthesis, kills cells, and can result in death of the infected individual
What will be an ideal response?