Question 1

The movement of molecules from an area of high concentration to an area of lower concentration is called

Accepted Answer

A) facilitated diffusion. 
B) diffusion. 
C) active transport. 
D) osmosis. 
E) endocytosis. 
A) facilitated diffusion. 
B) diffusion. 
C) active transport. 
D) osmosis. 
E) endocytosis.

Question 2

Cultures of a bacterial species were incubated on the shelf of a refrigerator, out on a lab bench top, on the shelf of a 37°C incubator and on the shelf of a 50°C incubator.After incubation, there was no growth at 37°C and 50°C, slight growth out on the bench top and abundant growth at refrigeration.What term could be used for this species?

Accepted Answer

A) Halophile 
B) Mesophile 
C) Anaerobe 
D) Psychrophile 
E) Capnophile 
A) Halophile 
B) Mesophile 
C) Anaerobe 
D) Psychrophile 
E) Capnophile

Question 3

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

Accepted Answer

A) cell; cell 
B) cell; colony 
C) colony; cell 
D) species; colony 
E) generation; cell 
A) cell; cell 
B) cell; colony 
C) colony; cell 
D) species; colony 
E) generation; cell

Question 4

The methanogens, producers of methane gas, require environments that

Accepted Answer

A) have sunlight. 
B) are very acidic. 
C) have abundant oxygen and CO2. 
D) are extremely cold. 
E) are anaerobic with hydrogen gas and CO2. 
A) have sunlight. 
B) are very acidic. 
C) have abundant oxygen and CO2. 
D) are extremely cold. 
E) are anaerobic with hydrogen gas and CO2.

Question 5

Which of the following is an important mineral ion that is a component of chloroplasts and stabilizer of membranes and ribosomes?

Accepted Answer

A) iron 
B) zinc 
C) calcium 
D) magnesium 
E) potassium 
A) iron 
B) zinc 
C) calcium 
D) magnesium 
E) potassium

Question 6

The time interval from parent cell to two new daughter cells is called the

Accepted Answer

A) binary fission. 
B) growth curve. 
C) generation time. 
D) death phase. 
E) culture time. 
A) binary fission. 
B) growth curve. 
C) generation time. 
D) death phase. 
E) culture time.

Question 7

A microaerophile

Accepted Answer

A) grows best in an anaerobic jar. 
B) grows with or without oxygen. 
C) needs normal atmospheric levels of oxygen. 
D) requires a small amount of oxygen but won't grow at normal atmospheric levels. 
A) grows best in an anaerobic jar. 
B) grows with or without oxygen. 
C) needs normal atmospheric levels of oxygen. 
D) requires a small amount of oxygen but won't grow at normal atmospheric levels.

Question 8

Bacterial biofilms stimulate the immune system differently than planktonic bacteria.

Accepted Answer

A) True 
 B)False

Question 9

The term phototroph refers to an organism that

Accepted Answer

A) uses CO2 for its carbon source. 
B) must obtain organic compounds for its carbon needs. 
C) gets energy from sunlight. 
D) gets energy by oxidizing chemical compounds. 
E) does not need a carbon source. 
A) uses CO2 for its carbon source. 
B) must obtain organic compounds for its carbon needs. 
C) gets energy from sunlight. 
D) gets energy by oxidizing chemical compounds. 
E) does not need a carbon source.

Question 10

All of the following could find a location in or on body tissues suitable for growth except

Accepted Answer

A) psychrophiles. 
B) anaerobes. 
C) facultative anaerobes. 
D) mesophiles. 
E) capnophiles. 
A) psychrophiles. 
B) anaerobes. 
C) facultative anaerobes. 
D) mesophiles. 
E) capnophiles.

Question 11

Which of the following is an important mineral ion of the cytochrome pigments used in cellular respiration?

Accepted Answer

A) iron 
B) zinc 
C) calcium 
D) magnesium 
E) potassium 
A) iron 
B) zinc 
C) calcium 
D) magnesium 
E) potassium

Question 12

The direct cell count, using a flow cytometer, can determine both viable cell numbers and number of dead cells in the sample.

Accepted Answer

A) True 
 B)False

Question 13

Microorganisms that live in severe habitats, such as very hot, acidic or salty environments, are called

Accepted Answer

A) thermophiles. 
B) halophiles. 
C) psychrophiles. 
D) extremophiles. 
E) barophiles. 
A) thermophiles. 
B) halophiles. 
C) psychrophiles. 
D) extremophiles. 
E) barophiles.

Question 14

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

Accepted Answer

A) True 
 B)False

Question 15

An organism that uses CO2 for its carbon needs and sunlight for its energy needs would be called a/an

Accepted Answer

A) heterotroph. 
B) photoautotroph. 
C) chemoheterotroph. 
D) saprobe. 
E) halotroph. 
A) heterotroph. 
B) photoautotroph. 
C) chemoheterotroph. 
D) saprobe. 
E) halotroph.

Question 16

Which of the following microorganisms would find hypotonic conditions most detrimental?

Accepted Answer

A) bacteria 
B) protozoa 
C) fungi 
D) algae 
E) cyanobacteria 
A) bacteria 
B) protozoa 
C) fungi 
D) algae 
E) cyanobacteria

Question 17

After binary fission, daughter cells will differ genetically.

Accepted Answer

A) True 
 B)False

Question 18

Growth factors

Accepted Answer

A) are inorganic. 
B) are synthesized by the organism. 
C) contain elemental oxygen. 
D) cannot be synthesized by the organism. 
E) All of these choices are correct. 
A) are inorganic. 
B) are synthesized by the organism. 
C) contain elemental oxygen. 
D) cannot be synthesized by the organism. 
E) All of these choices are correct.

Question 19

The type of photosynthesis that does not produce oxygen

Accepted Answer

A) occurs in cyanobacteria. 
B) does not require CO2 as a reactant. 
C) occurs in purple and green sulfur bacteria. 
D) does not require sunlight. 
E) occurs in algae and plants. 
A) occurs in cyanobacteria. 
B) does not require CO2 as a reactant. 
C) occurs in purple and green sulfur bacteria. 
D) does not require sunlight. 
E) occurs in algae and plants.

Question 20

Which of the following is not a major element of a microbial cell?

Accepted Answer

A) copper 
B) carbon 
C) hydrogen 
D) nitrogen 
E) oxygen 
A) copper 
B) carbon 
C) hydrogen 
D) nitrogen 
E) oxygen

Exam 7: Microbial Nutrition, Ecology, and Growth

The movement of molecules from an area of high concentration to an area of lower concentration is called

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

The methanogens, producers of methane gas, require environments that

Which of the following is an important mineral ion that is a component of chloroplasts and stabilizer of membranes and ribosomes?

The time interval from parent cell to two new daughter cells is called the

A microaerophile

Bacterial biofilms stimulate the immune system differently than planktonic bacteria.

The term phototroph refers to an organism that

All of the following could find a location in or on body tissues suitable for growth except

Which of the following is an important mineral ion of the cytochrome pigments used in cellular respiration?

The direct cell count, using a flow cytometer, can determine both viable cell numbers and number of dead cells in the sample.

Microorganisms that live in severe habitats, such as very hot, acidic or salty environments, are called

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

An organism that uses CO2 for its carbon needs and sunlight for its energy needs would be called a/an

Which of the following microorganisms would find hypotonic conditions most detrimental?

After binary fission, daughter cells will differ genetically.

Growth factors

The type of photosynthesis that does not produce oxygen

Which of the following is not a major element of a microbial cell?

The Main Themes of Microbiology

The Chemistry of Biology

Tools of the Laboratory: Methods of Studying Microorganisms

A Survey of Prokaryotic Cells and Microorganisms

A Survey of Eukaryotic Cells and Microorganisms

An Introduction to Viruses

An Introduction to Microbial Metabolism: the Chemical Crossroads of Life

Microbial Genetics

Genetic Engineering: a Revolution in Molecular Biology

Physical and Chemical Agents for Microbial Control

Drugs, Microbes, Host--The Elements of Chemotherapy

Microbe-Human Interactions: Infection and Disease

An Introduction to Host Defenses and Innate Immunities

Adaptive, Specific Immunity and Immunization

Disorders in Immunity

Procedures for Identifying Pathogens and Diagnosing Infections

The Gram-Positive and Gram-Negative Cocci of Medical Importance

The Gram-Positive Bacilli of Medical Importance

The Gram-Negative Bacilli of Medical Importance

Miscellaneous Bacterial Agents of Disease

The Fungi of Medical Importance

The Parasites of Medical Importance

Introduction to Viruses That Infect Humans: the Dna Viruses

The Rna Viruses That Infect Humans

Environmental Microbiology

Applied and Industrial Microbiology

Filters

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

An organism that uses CO₂ for its carbon needs and sunlight for its energy needs would be called a/an