Question 1

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

Accepted Answer

A) True 
 B)False

Question 2

A microorganism that does not have catalase or superoxide dismutase would find it difficult to live in an environment with ________.

Accepted Answer

A)   carbon dioxide
B)   oxygen
C)   high salt
D)   temperatures above 37°C
E)   high acidityF) D) and E)
G) A) and E)

Question 3

Which of the following is a characteristic of active transport?

Accepted Answer

A)   Involves the movement of water
B)   Does not require the input of energy
C)   Involves the movement of substances from areas of high concentration to areas of low concentration
D)   Involves the use of carrier proteinsE) None of the above
F) C) and D)

Question 4

Nutrient absorption is mediated by the ________.

Accepted Answer

A)   cell wall
B)   peptidoglycan layer
C)   proteins in the periplasmic space
D)   cell membrane
E)   nuclear membraneF) B) and D)
G) A) and E)

Question 5

An organism that respires using oxygen when it is present but can switch to an alternative anaerobic pathways when it is absent is a(n)  ________.

Accepted Answer

A)   aerotolerant anaerobe
B)   obligate aerobe
C)   facultative anaerobe
D)   microaerophile
E)   obligate anaerobeF) B) and D)
G) B) and C)

Question 6

Prior to administration of verapamil, which of the following is most important to assess?

Accepted Answer

A)   Pupillary light reflex
B)   Blood oxygen levels
C)   Level of consciousness
D)   Vital signsE) A) and B)
F) C) and D)

Question 7

The RN prepares to administer hypertonic saline. Which of the following solutions would you expect the physician to order to produce the desired physiologic effect in the patient?

Accepted Answer

A)   0.45% sodium chloride
B)   0.9% sodium chloride
C)   0.9% sodium chloride with dextrose
D)   3% sodium chlorideE) None of the above
F) C) and D)

Question 8

Cultures of a bacterial species were incubated out on the incubator shelf, in an anaerobic jar, and in a candle jar. After incubation, there was moderate growth of cultures in the candle and anaerobic jars, but heavy growth of the culture on the incubator shelf. This species is a(n)  ________.

Accepted Answer

A)   obligate aerobe
B)   obligate anaerobe
C)   facultative anaerobe
D)   microaerophile
E)   capnophileF) C) and E)
G) A) and E)

Question 9

Which of the following describes the mechanism of action of calcium channel blockers?

Accepted Answer

A)   Relaxation of arterial smooth muscle
B)   Relaxation of venous smooth muscle
C)   Relaxation of venous smooth muscle and reduction of impulse conduction
D)   Relaxation of arterial smooth muscle and reduction of impulse conductionE) A) and D)
F) B) and C)

Question 10

A barophile would grow best in ________.

Accepted Answer

A)   acid pools
B)   the deep oceans
C)   hot geyser springs
D)   arid, desert soil
E)   salt lakesF) A) and B)
G) A) and C)

Question 11

What compound is the most abundant in a cell?

Accepted Answer

A)   CO2
B)   CH4
C)   H2O
D)   Glucose
E)   NH3F) A) and B)
G) B) and E)

Question 12

Microorganisms require small quantities of ________ for enzyme function and maintenance of protein structure.

Accepted Answer

A)   carbon
B)   macronutrients
C)   water
D)   growth factors
E)   trace elementsF) A) and E)
G) None of the above

Question 13

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

Accepted Answer

A) True 
 B)False

Question 14

Atoms and molecules are in constant, random motion. Movement of any molecule along its concentration gradient is termed ________, and movement of water in the same manner, across a selectively permeable membrane, is called ________.

Accepted Answer

A)   diffusion; osmosis
B)   osmosis; diffusion
C)   hypertonic; hypotonic
D)   isotonic; hypertonic
E)   isotonic; osmosisF) A) and D)
G) All of the above

Question 15

The term facultative refers to ________.

Accepted Answer

A)   the ability to exist in a wide range of conditions
B)   existing in a very narrow niche
C)   using chemicals for energy production
D)   using light for energy production
E)   using oxygen for metabolismF) C) and E)
G) A) and B)

Question 16

The production of antibiotics is a form of antagonism called ________.

Accepted Answer

A)   symbiosis
B)   satellitism
C)   antibiosis
D)   mutualism
E)   synergismF) A) and B)
G) A) and C)

Question 17

Facilitated diffusion and active transport require a carrier protein to mediate the movement of molecules across the plasma membrane.

Accepted Answer

A) True 
 B)False

Question 18

Lithoautotrophs use inorganic nutrients for carbon and energy sources.

Accepted Answer

A) True 
 B)False

Question 19

The use of energy by a cell to enclose a substance in its membrane by forming a vacuole and engulfing it is called ________.

Accepted Answer

A)   facilitated diffusion
B)   diffusion
C)   active transport
D)   osmosis
E)   endocytosisF) C) and E)
G) C) and D)

Question 20

The E. coli that normally live in the human large intestines and produce vitamin K for the body to use would best be termed a ________ relationship.

Accepted Answer

A)   parasitic
B)   saprobic
C)   commensal
D)   mutualistic
E)   None of the choices are correct.F) None of the above
G) A) and B)

Exam 6: Microbial Nutrition and Growth

Which of the following is a characteristic of active transport?

Correct AnswerverifiedShow Answer

The production of antibiotics is a form of antagonism called ________.

Correct AnswerverifiedShow Answer

The E. coli that normally live in the human large intestines and produce vitamin K for the body to use would best be termed a ________ relationship.

Correct AnswerverifiedShow Answer

An organism that respires using oxygen when it is present but can switch to an alternative anaerobic pathways when it is absent is a(n) ________.

Correct AnswerverifiedShow Answer

Microorganisms require small quantities of ________ for enzyme function and maintenance of protein structure.

Correct AnswerverifiedShow Answer

Atoms and molecules are in constant, random motion. Movement of any molecule along its concentration gradient is termed ________, and movement of water in the same manner, across a selectively permeable membrane, is called ________.

Correct AnswerverifiedShow Answer

Prior to administration of verapamil, which of the following is most important to assess?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The use of energy by a cell to enclose a substance in its membrane by forming a vacuole and engulfing it is called ________.

Correct AnswerverifiedShow Answer

What compound is the most abundant in a cell?

Correct AnswerverifiedShow Answer

The term facultative refers to ________.

Correct AnswerverifiedShow Answer

A microorganism that does not have catalase or superoxide dismutase would find it difficult to live in an environment with ________.

Correct AnswerverifiedShow Answer

Nutrient absorption is mediated by the ________.

Correct AnswerverifiedShow Answer

Facilitated diffusion and active transport require a carrier protein to mediate the movement of molecules across the plasma membrane.

Correct AnswerverifiedShow Answer

Lithoautotrophs use inorganic nutrients for carbon and energy sources.

Correct AnswerverifiedShow Answer

A barophile would grow best in ________.

Correct AnswerverifiedShow Answer

Which of the following describes the mechanism of action of calcium channel blockers?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The RN prepares to administer hypertonic saline. Which of the following solutions would you expect the physician to order to produce the desired physiologic effect in the patient?

Correct AnswerverifiedShow Answer

Cultures of a bacterial species were incubated out on the incubator shelf, in an anaerobic jar, and in a candle jar. After incubation, there was moderate growth of cultures in the candle and anaerobic jars, but heavy growth of the culture on the incubator shelf. This species is a(n) ________.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Atoms and molecules are in constant, random motion. Movement of any molecule along its concentration gradient is termed , and movement of water in the same manner, across a selectively permeable membrane, is called .

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified