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Exam 6: Microbial Nutrition and Growth

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Question 31

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The term photoheterotroph refers to an organism that  ________.

A) uses CO₂ for its carbon source
B) utilizes inorganic compounds for its carbon needs
C) gets energy from sunlight
D) gets energy by metabolizing organic matter of dead organisms
E) does not need a carbon source

F) B) and C)
G) A) and E)

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Question 32

Multiple Choice

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An organism that grows slowly in the cold but has an optimum growth temperature of 25° C is called a(n) ________.

A) extremophile
B) thermophile
C) psychrophile
D) psychrotroph
E) thermoduric

F) A) and E)
G) A) and B)

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Question 33

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Aerobic respiration is an example of ________.

A closed culture system is used to determine a population growth curve.

A 24-year-old male arrives at the emergency department via air transport after sustaining a fall while rock climbing. The patient is unresponsive with sluggishly reactive pupils upon arrival. His right arm and bilateral lower extremities have obvious fractures. He was intubated by EMS and requires mechanical ventilation. A CT scan reveals multiple head bleeds and intracranial swelling with a midline shift. The patient is rushed to surgery with the plan to relieve the pressure of the intracranial swelling. -Following the patient's surgical procedure,he is admitted to the neurological intensive care unit.Interventions are implemented to decrease intracranial pressure,including the administration of intravenous hypertonic saline.Which of the following do you anticipate as the therapeutic response to the administration of this medication?  

A barophile would grow best in ________.

An important mineral ion of the cytochrome pigments of cellular respiration is ________.

In the viable plate count method,a measured sample of a culture is evenly spread across an agar surface and incubated.Each ________ represents one ________ from the sample.

Calcium is required for bacteria because it ________.

The hospital infectious disease team is involved with the study of a healthcare-associated infection that has spread to 10% of inpatients. The infected patients are exhibiting symptoms of severe abdominal cramping, diarrhea, nausea, and vomiting. The RN on the infectious disease team provides education to staff regarding the pattern of bacterial growth and methods of infection control. -Which of the following is a characteristic of the death phase of bacterial growth?  

An important mineral ion that is a component of chloroplasts and stabilizer of membranes and ribosomes is ________.

Binary fission results in four daughter cells from one parent cell.

A halophile would grow best in ________.

Saprobes do not need a carbon source for growth and metabolism.

Whether an organism is an autotroph or heterotroph depends on its source of nitrogen.

A 24-year-old male arrives at the emergency department via air transport after sustaining a fall while rock climbing. The patient is unresponsive with sluggishly reactive pupils upon arrival. His right arm and bilateral lower extremities have obvious fractures. He was intubated by EMS and requires mechanical ventilation. A CT scan reveals multiple head bleeds and intracranial swelling with a midline shift. The patient is rushed to surgery with the plan to relieve the pressure of the intracranial swelling. -The physician orders administration of an intravenous osmotic diuretic as the patient is en route to surgery.As the RN,you are familiar with the action of the drug,which increases the osmolality of the blood.Which of the following do you anticipate as the physiologic response to the administration of this medication?  

The term chemoheterotroph refers to an organism that ________.

Organisms called ________ live on or in the body of a host and cause some degree of harm.

An organism that cannot tolerate an oxygen environment is a(n) ________.

The hospital infectious disease team is involved with the study of a healthcare-associated infection that has spread to 10% of inpatients. The infected patients are exhibiting symptoms of severe abdominal cramping, diarrhea, nausea, and vomiting. The RN on the infectious disease team provides education to staff regarding the pattern of bacterial growth and methods of infection control. -During which stages of bacterial growth is an infected patient most at risk of spreading the organism to others?