Question 1

Siderophore-iron complexes enter cells with the help of:

Accepted Answer

A)  porins 
B)  diffusion 
C)  aquaporins 
D)  ABC transporters 
E)  efflux pumps 
A)  porins 
B)  diffusion 
C)  aquaporins 
D)  ABC transporters 
E)  efflux pumps

Question 2

Which of the following genera does NOT undergo differentiation?

Accepted Answer

A)  Anabaena 
B)  Bacillus 
C)  Clostridium 
D)  Escherichia 
E)  Streptomyces 
A)  Anabaena 
B)  Bacillus 
C)  Clostridium 
D)  Escherichia 
E)  Streptomyces

Question 3

Which of the following is a micronutrient?

Accepted Answer

A)  carbon 
B)  nitrogen 
C)  sulfur 
D)  calcium 
E)  zinc 
A)  carbon 
B)  nitrogen 
C)  sulfur 
D)  calcium 
E)  zinc

Question 4

If you determined the number of cells in a sample using viable plate counts and optical density measurements, why would the results from the two different methods be so different?

Accepted Answer

Cell numbers from optical density measur

Question 5

All of Earth's life-forms are based on:

Accepted Answer

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

Question 6

The time between inoculation and the beginning of growth is usually called the:

Accepted Answer

A)  lag phase 
B)  early log phase 
C)  late log phase 
D)  stationary phase 
E)  death phase 
A)  lag phase 
B)  early log phase 
C)  late log phase 
D)  stationary phase 
E)  death phase

Question 7

Which term refers to the condition in which a culture covers the entire plate surface?

Accepted Answer

A)  dilution streaking 
B)  spread plate 
C)  confluent 
D)  microcolony 
E)  colony 
A)  dilution streaking 
B)  spread plate 
C)  confluent 
D)  microcolony 
E)  colony

Question 8

How do some cyanobacteria fix nitrogen while growing aerobically?

Accepted Answer

A)  they don't because nitrogenase is destroyed by oxygen 
B)  by using special cells called heterocysts that protect the enzyme 
C)  by using cysts that protect the enzyme 
D)  they just do it, no special structures or mechanisms 
E)  they live symbiotically with other organisms that protect the enzyme 
A)  they don't because nitrogenase is destroyed by oxygen 
B)  by using special cells called heterocysts that protect the enzyme 
C)  by using cysts that protect the enzyme 
D)  they just do it, no special structures or mechanisms 
E)  they live symbiotically with other organisms that protect the enzyme

Question 9

Which of the following represents small molecules that fit into specific enzymes and aid in the catalytic process?

Accepted Answer

A)  essential nutrients 
B)  macronutrients 
C)  micronutrients 
D)  cofactors 
E)  substrates 
A)  essential nutrients 
B)  macronutrients 
C)  micronutrients 
D)  cofactors 
E)  substrates

Question 10

By themselves, heterotrophs would deplete the world of __________ sources and starve to death.

Accepted Answer

A)  usable nitrogen 
B)  organic carbon 
C)  water 
D)  energy 
E)  oxygen 
A)  usable nitrogen 
B)  organic carbon 
C)  water 
D)  energy 
E)  oxygen

Siderophore-iron complexes enter cells with the help of:

Which of the following genera does NOT undergo differentiation?

Which of the following is a micronutrient?

If you determined the number of cells in a sample using viable plate counts and optical density measurements, why would the results from the two different methods be so different?

All of Earth's life-forms are based on:

The time between inoculation and the beginning of growth is usually called the:

Which term refers to the condition in which a culture covers the entire plate surface?

How do some cyanobacteria fix nitrogen while growing aerobically?

Which of the following represents small molecules that fit into specific enzymes and aid in the catalytic process?

By themselves, heterotrophs would deplete the world of __________ sources and starve to death.

Microbial Life: Origin and Discovery

Observing the Microbial Cell

Cell Structure and Function

Environmental Influences and Control of Microbial Growth

Virus Structure and Function

Genomes and Chromosomes

Transcription, Translation, and Bioinformatics

Gene Transfer, Mutations, and Genome Evolution

Molecular Regulation

Viral Molecular Biology

Molecular Techniques and Biotechnology

Energetics and Catabolism

Respiration, Lithotrophy, and Photolysis

Biosynthesis

Food and Industrial Microbiology

Origins and Evolution

Bacterial Diversity

Archaeal Diversity

Eukaryotic Diversity

Microbial Ecology

Microbes and the Global Environment

Human Microbiota and Nonspecific Host Defenses

The Adaptive Immune Response

Microbial Pathogenesis

Microbial Diseases

Antimicrobial Chemotherapy

Clinical Microbiology and Epidemiology

Filters

Exam 4: Bacterial Culture, Growth, and Development

Siderophore-iron complexes enter cells with the help of:

Which of the following genera does NOT undergo differentiation?

Which of the following is a micronutrient?

If you determined the number of cells in a sample using viable plate counts and optical density measurements, why would the results from the two different methods be so different?

All of Earth's life-forms are based on:

The time between inoculation and the beginning of growth is usually called the:

Which term refers to the condition in which a culture covers the entire plate surface?

How do some cyanobacteria fix nitrogen while growing aerobically?

Which of the following represents small molecules that fit into specific enzymes and aid in the catalytic process?

By themselves, heterotrophs would deplete the world of __________ sources and starve to death.

Microbial Life: Origin and Discovery

Observing the Microbial Cell

Cell Structure and Function

Environmental Influences and Control of Microbial Growth

Virus Structure and Function

Genomes and Chromosomes

Transcription, Translation, and Bioinformatics

Gene Transfer, Mutations, and Genome Evolution

Molecular Regulation

Viral Molecular Biology

Molecular Techniques and Biotechnology

Energetics and Catabolism

Respiration, Lithotrophy, and Photolysis

Biosynthesis

Food and Industrial Microbiology

Origins and Evolution

Bacterial Diversity

Archaeal Diversity

Eukaryotic Diversity

Microbial Ecology

Microbes and the Global Environment

Human Microbiota and Nonspecific Host Defenses

The Adaptive Immune Response

Microbial Pathogenesis

Microbial Diseases

Antimicrobial Chemotherapy

Clinical Microbiology and Epidemiology

Filters