Growth and Nutrition of Bacteria An organism that expends energy to grow in a habitat with a low water activity in order to maintain internal solute concentrations to retain water is osmotolerant acidophile alkalophile aerotolerant anaerobe osmotolerant acidophile alkalophile aerotolerant anaerobe ANSWER DOWNLOAD EXAMIANS APP
Growth and Nutrition of Bacteria The growth is normally expressed as __________ in turbidimetric measurement mg N2 /ml cells per ml cfu/ml optical density mg N2 /ml cells per ml cfu/ml optical density ANSWER DOWNLOAD EXAMIANS APP
Growth and Nutrition of Bacteria Which of the following organisms typically get their carbon for biosynthesis from organic compounds? Ammonia-oxidizing bacteria (chemolithotrophic bacteria) None of these Photosynthetic cyanobacteria (phototrophic metabolism) Aerobic, glucose-respiring bacteria (aerobic respiration) Ammonia-oxidizing bacteria (chemolithotrophic bacteria) None of these Photosynthetic cyanobacteria (phototrophic metabolism) Aerobic, glucose-respiring bacteria (aerobic respiration) ANSWER DOWNLOAD EXAMIANS APP
Growth and Nutrition of Bacteria Which of the following procedures uses a photocell to measure absorbance of a culture to regulate the flow of culture media? Trubidostat Petroff-Hausser chamber Coulter Counter Hemostat Trubidostat Petroff-Hausser chamber Coulter Counter Hemostat ANSWER DOWNLOAD EXAMIANS APP
Growth and Nutrition of Bacteria A culture broth tube was very turbid at the bottom of the tube but clear at the top of the tube indicating that the broth is sterile organism can tolerate oxygen organism should be grown in an anaerobic chamber organism cannot produce superoxide dismutase and/or catalase broth is sterile organism can tolerate oxygen organism should be grown in an anaerobic chamber organism cannot produce superoxide dismutase and/or catalase ANSWER DOWNLOAD EXAMIANS APP
Growth and Nutrition of Bacteria All organisms require at least small amounts of carbondioxide, However, some can use CO2 as their sole source of carbon. Such organisms are termed as chemotrophs autotrophs phototrophs photo-organotrophs chemotrophs autotrophs phototrophs photo-organotrophs ANSWER DOWNLOAD EXAMIANS APP
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