A) water transport proteins. B) molecules that prevent water from crossing a membrane. C) enzymes involved in the generation of water within cells. D) cations bound to water molecules. A) water transport proteins. B) molecules that prevent water from crossing a membrane. C) enzymes involved in the generation of water within cells. D) cations bound to water molecules.

Exam 2: Microbial Cell Structure and Function

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Compare and contrast the chemical composition and structure of the cytoplasmic membranes found in Bacteria and Archaea.What is the advantage of the archaeal membranes in relationship to the types of environments many archaea inhabit?

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Question 1

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Bacterial cytoplasmic membranes contain fatty acids with ester linkages that always form a phospholipid bilayer that is highly fluid.Archaeal cytoplasmic membranes contain glycerol ethers that are either diether or tetraethers.Glycerol diether molecules form a bilayer membrane and glycerol tetraether form a monolayer membrane.Both the ether linkages and the monolayer structure are more rigid than the bilayer ester-linked fatty acids and are more stable at high temperatures and pressures.Archaea tend to inhabit more extreme environments in terms of temperature,pressure,and salt,thus the more stable membrane components allow archaea to survive under these conditions.

An organism of the genus Staphylococcus is ,while an organism of the genus Spirochaeta is .

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Mitochondria and hydrogenosomes are similar in that they both

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All eukaryotes contain

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Question 4

Macromolecules resulting from lysosomal digestion are used in cellular biosynthesis and energy generation.

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Question 5

Nutrient transport requires energy because the nutrients must be transported into the cell against a concentration gradient.The energy required for nutrient transport is supplied by

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Question 6

Predict what would happen to a motile bacterium undergoing chemotaxis if the Mot proteins suddenly ceased to function.

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Question 7

The prokaryotic transport system that involves a substrate-binding protein,a membrane-integrated transporter,and an ATP-hydrolyzing protein is

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Question 8

You have discovered a new coccoid-shaped microorganism with no nucleus,a rigid cell wall,and a diameter of 2 µm.Chemical tests reveal that its cell wall does NOT contain peptidoglycan.The new microorganism is

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Question 9

Aquaporins are

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Question 10

What is the function of an endospore and how is an endospore formed?

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Question 11

Small acid-soluble proteins (SASPs)protect DNA from ultraviolet light and are found in high numbers within

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Question 12

Bacteria with type IV pili

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Question 13

What type of microscope would you use to visualize the internal structures of a chloroplast? Support your conclusion with evidence based on the size of the structures you want to see and the resolution and magnification power of different types of microscopes.

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Question 14

Which is/are a function(s)of the cytoplasmic membrane in prokaryotes?

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Question 15

The terms "run" and "tumble" are generally associated with

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Question 16

The membrane-enclosed compartments that contain digestive enzymes in eukaryotic cells are called

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Question 17

Type IV pili are involved in

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Question 18

When does endospore formation commence?

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Question 19

Despite the invariance of the peptidoglycan backbone's structure,there are more than 100 different types of peptidoglycan.

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Question 20

Showing 1 - 20 of 85

Exam 2: Microbial Cell Structure and Function

Compare and contrast the chemical composition and structure of the cytoplasmic membranes found in Bacteria and Archaea.What is the advantage of the archaeal membranes in relationship to the types of environments many archaea inhabit?

An organism of the genus Staphylococcus is ________,while an organism of the genus Spirochaeta is ________.

Mitochondria and hydrogenosomes are similar in that they both

All eukaryotes contain

Macromolecules resulting from lysosomal digestion are used in cellular biosynthesis and energy generation.

Nutrient transport requires energy because the nutrients must be transported into the cell against a concentration gradient.The energy required for nutrient transport is supplied by

Predict what would happen to a motile bacterium undergoing chemotaxis if the Mot proteins suddenly ceased to function.

The prokaryotic transport system that involves a substrate-binding protein,a membrane-integrated transporter,and an ATP-hydrolyzing protein is

You have discovered a new coccoid-shaped microorganism with no nucleus,a rigid cell wall,and a diameter of 2 µm.Chemical tests reveal that its cell wall does NOT contain peptidoglycan.The new microorganism is

Aquaporins are

What is the function of an endospore and how is an endospore formed?

Small acid-soluble proteins (SASPs)protect DNA from ultraviolet light and are found in high numbers within

Bacteria with type IV pili

What type of microscope would you use to visualize the internal structures of a chloroplast? Support your conclusion with evidence based on the size of the structures you want to see and the resolution and magnification power of different types of microscopes.

Which is/are a function(s)of the cytoplasmic membrane in prokaryotes?

The terms "run" and "tumble" are generally associated with

The membrane-enclosed compartments that contain digestive enzymes in eukaryotic cells are called

Type IV pili are involved in

When does endospore formation commence?

Despite the invariance of the peptidoglycan backbone's structure,there are more than 100 different types of peptidoglycan.

Microorganisms and Microbiology

Microbial Metabolism

Molecular Biology

Microbial Growth and Control

Microbial Genomics

Metabolic Regulation

Viruses and Virology

Viral Genomes and Diversity

Genetics of Bacteria and Archaea

Genetic Engineering and Biotechnology

Microbial Evolution and Systematics

Metabolic Diversity of Microorganisms

Functional Diversity of Bacteria

Diversity of Bacteria

Diversity of Archaea

Diversity of Eukaryotic Microorganisms

Methods in Microbial Ecology

Microbial Ecosystems

Nutrient Cycles

Microbiology of the Built Environment

Microbial Symbioses

Microbial Interactions With Humans

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Immune Mechanisms

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Diagnostic Microbiology

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Person-To-Person Bacterial and Viral Diseases

Vectorborne and Soilborne Bacterial and Viral Diseases

Water and Food As Vehicles of Bacterial Diseases

Eukaryotic Pathogens: Fungal and Parasitic Diseases

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An organism of the genus Staphylococcus is ,while an organism of the genus Spirochaeta is .