MCB 2010 CORRECT FINAL EXAMS QUESTIONS AND
ANSWERS SURE A+
✔✔Organisms that require organic sources of carbon and energy are called -
✔✔photoautotrophs
✔✔An organism that produces its own food is called an - ✔✔autotroph
✔✔The _________ growth temperature is the temperature at which an organism
exhibits the highest growth rate. - ✔✔optimum
✔✔An __________________ organism requires oxygen for growth - ✔✔obligate
aerobe
✔✔Why do anaerobic bacteria die in the presence of any oxygen? - ✔✔Aerobic
bacteria have enzymes that can alter the toxic forms of oxygen, anaerobic don't
✔✔The body is 37 degrees C. What group of organisms lives at that temperature? -
✔✔Mesophiles
✔✔A cell is placed in distilled water. The cells are in what type of solution? What
happens to the cell? - ✔✔Hypotonic, the cell would burst
✔✔E. coli that lives in our intestines is an example of what type of relationship? -
✔✔Synergistic relationship
✔✔What is the preferred method for long term storage of bacteria? - ✔✔lyophilization
✔✔A sample placed into fresh medium is initially in the ___ phase of microbial growth in
most instances. - ✔✔lag
, ✔✔An acidophile would most likely be found in - ✔✔a container of vinegar
✔✔Transport media - ✔✔Used by health care personnel to ensure clinical specimens
are not contaminated and to protect people from infection
✔✔Selective Media - ✔✔Contain substances that favor or inhibit growth of particular
microorganisms
✔✔Supportive Media - ✔✔Useful when nutritional needs of an organisms are unknown
✔✔Order of Binary Fission - ✔✔1) The DNA is replicated
2) The cell doubles in size
3) The cell forms a septum
4) The cell separates from its offspring
✔✔MacConkey agar plates represent what type of medium? - ✔✔Selective and
differential
✔✔What growth phase does the bacterial population grow the most? - ✔✔Log phase
✔✔cell wall - ✔✔protection and support
✔✔cytoplasm - ✔✔supports organelles
✔✔nucleus - ✔✔controls cell activites
✔✔endoplasmic reticulum - ✔✔carries materials in and out
✔✔ribosome - ✔✔protein production
✔✔mitochondria - ✔✔ATP production
✔✔vacuole - ✔✔stores food and water
✔✔chloroplast - ✔✔photosynthesis
✔✔golgi body - ✔✔packages and distributes in and out of cell
✔✔lysosome - ✔✔can break down cell
✔✔centriole - ✔✔cell division
✔✔LPS - ✔✔union of lipid with sugar. The lipid portion can be toxic.
ANSWERS SURE A+
✔✔Organisms that require organic sources of carbon and energy are called -
✔✔photoautotrophs
✔✔An organism that produces its own food is called an - ✔✔autotroph
✔✔The _________ growth temperature is the temperature at which an organism
exhibits the highest growth rate. - ✔✔optimum
✔✔An __________________ organism requires oxygen for growth - ✔✔obligate
aerobe
✔✔Why do anaerobic bacteria die in the presence of any oxygen? - ✔✔Aerobic
bacteria have enzymes that can alter the toxic forms of oxygen, anaerobic don't
✔✔The body is 37 degrees C. What group of organisms lives at that temperature? -
✔✔Mesophiles
✔✔A cell is placed in distilled water. The cells are in what type of solution? What
happens to the cell? - ✔✔Hypotonic, the cell would burst
✔✔E. coli that lives in our intestines is an example of what type of relationship? -
✔✔Synergistic relationship
✔✔What is the preferred method for long term storage of bacteria? - ✔✔lyophilization
✔✔A sample placed into fresh medium is initially in the ___ phase of microbial growth in
most instances. - ✔✔lag
, ✔✔An acidophile would most likely be found in - ✔✔a container of vinegar
✔✔Transport media - ✔✔Used by health care personnel to ensure clinical specimens
are not contaminated and to protect people from infection
✔✔Selective Media - ✔✔Contain substances that favor or inhibit growth of particular
microorganisms
✔✔Supportive Media - ✔✔Useful when nutritional needs of an organisms are unknown
✔✔Order of Binary Fission - ✔✔1) The DNA is replicated
2) The cell doubles in size
3) The cell forms a septum
4) The cell separates from its offspring
✔✔MacConkey agar plates represent what type of medium? - ✔✔Selective and
differential
✔✔What growth phase does the bacterial population grow the most? - ✔✔Log phase
✔✔cell wall - ✔✔protection and support
✔✔cytoplasm - ✔✔supports organelles
✔✔nucleus - ✔✔controls cell activites
✔✔endoplasmic reticulum - ✔✔carries materials in and out
✔✔ribosome - ✔✔protein production
✔✔mitochondria - ✔✔ATP production
✔✔vacuole - ✔✔stores food and water
✔✔chloroplast - ✔✔photosynthesis
✔✔golgi body - ✔✔packages and distributes in and out of cell
✔✔lysosome - ✔✔can break down cell
✔✔centriole - ✔✔cell division
✔✔LPS - ✔✔union of lipid with sugar. The lipid portion can be toxic.
