Question 1

Which feature is not found in protozoans?

Accepted Answer

A)  unicellular 
B)  performs photosynthesis 
C)  usually heterotrophic 
D)  no cell walls 
E)  may reproduce sexually or asexually 
A)  unicellular 
B)  performs photosynthesis 
C)  usually heterotrophic 
D)  no cell walls 
E)  may reproduce sexually or asexually

Question 2

Which pairing of organism and the chemical component of its cell wall is matched incorrectly?

Accepted Answer

A)  Bacteria: peptidoglycan 
B)  Fungi: chitin 
C)  Protista: cellulose, silica, or other components 
D)  Animals: cholesterol 
E)  Plants: cellulose 
A)  Bacteria: peptidoglycan 
B)  Fungi: chitin 
C)  Protista: cellulose, silica, or other components 
D)  Animals: cholesterol 
E)  Plants: cellulose

Question 3

A patient presents with symptoms of severe gastrointestinal distress. Bacterial and viral pathogens are ruled out. A protozoan which moves via hair- like appendages is observed upon microscopic examination of the patient's stool. The most likely cause of the infection is

Accepted Answer

A)  Balantidium coli, a ciliated protozoan. 
B)  ergot toxin, a fungal mycotoxin. 
C)  Giardia lamblia, a flagellated protozoan. 
D)  Plasmodium, an apicomplexan. 
E)  Entamoeba histolytica, an amoeboid protozoan. 
A)  Balantidium coli, a ciliated protozoan. 
B)  ergot toxin, a fungal mycotoxin. 
C)  Giardia lamblia, a flagellated protozoan. 
D)  Plasmodium, an apicomplexan. 
E)  Entamoeba histolytica, an amoeboid protozoan.

Question 4

A researcher discovers a chemical compound which prevents the incorporation of ergosterol in the plasma membrane We can predict that this compound would be toxic to which kinds of organisms?

Accepted Answer

A)  viruses 
B)  fungi 
C)  animals 
D)  plants 
E)  bacteria 
A)  viruses 
B)  fungi 
C)  animals 
D)  plants 
E)  bacteria

Question 5

Which structure pictured is the site of synthesis of proteins destined for secretion?

Accepted Answer

A)  rough endoplasmic reticulum 
B)  rough and smooth endoplasmic reticulum, and cisternae 
C)  rough and smooth endoplasmic reticulum 
D)  cisternae 
E)  smooth endoplasmic reticulum 
A)  rough endoplasmic reticulum 
B)  rough and smooth endoplasmic reticulum, and cisternae 
C)  rough and smooth endoplasmic reticulum 
D)  cisternae 
E)  smooth endoplasmic reticulum

Question 6

Eukaryotic organelles may be targeted by environmental toxins or microbial pathogens. Describe two examples of disease in humans which result from damage or malfunction to an organelle or other intracellular structure.

Accepted Answer

The bacteria Shigella and E. coli produc

Question 7

Cells which are active and have high energy demand will have more mitochondria than cell that are less active and have lower energy demand.

Accepted Answer

A) True 
 B)False

Question 8

Hyphae are

Accepted Answer

A)  a collection of tubular structures that result from fungal growth. 
B)  collections of fungal growth on the skin. 
C)  reproductive structures in fungi. 
D)  a unicellular yeast- like form found in some fungi. 
E)  the main growth form of pathogenic fungi when they are infecting humans. 
A)  a collection of tubular structures that result from fungal growth. 
B)  collections of fungal growth on the skin. 
C)  reproductive structures in fungi. 
D)  a unicellular yeast- like form found in some fungi. 
E)  the main growth form of pathogenic fungi when they are infecting humans.

Question 9

Antimicrobial therapies against fungal or protozoan pathogens are challenging to develop because these microbes have eukaryotic cells just as humans do. However, differences do exist between animal cells and the cells of these microbes which provide the opportunity to develop therapies which target these unique structures or molecules. Describe three cellular components of fungal and/or protozoan cells which are not found in animal cells which could be potential targets for drug therapy.

Accepted Answer

All eukaryotic cells contain sterols in

Question 10

The rough ER and the smooth ER are distinguished from each other by

Accepted Answer

A)  the presence or absence of membrane- bound ribosomes. 
B)  the presence or absence of membrane- bound ribosomes and the synthesis of lipids by the rough ER and the synthesis of proteins by the smooth ER. 
C)  the presence or absence of both DNA and membrane- bound ribosomes. 
D)  the presence of absence of DNA. 
E)  synthesis of lipids by the rough ER and synthesis of proteins by the smooth ER. 
A)  the presence or absence of membrane- bound ribosomes. 
B)  the presence or absence of membrane- bound ribosomes and the synthesis of lipids by the rough ER and the synthesis of proteins by the smooth ER. 
C)  the presence or absence of both DNA and membrane- bound ribosomes. 
D)  the presence of absence of DNA. 
E)  synthesis of lipids by the rough ER and synthesis of proteins by the smooth ER.

Question 11

The primary function of the nucleus is

Accepted Answer

A)  serving as the site of most of the cell's chemical reactions. 
B)  digestion and processing of nutrients. 
C)  housing the cell's DNA. 
D)  serving as the site of ribosome synthesis of protein. 
E)  production of the cell's energy molecule, ATP. 
A)  serving as the site of most of the cell's chemical reactions. 
B)  digestion and processing of nutrients. 
C)  housing the cell's DNA. 
D)  serving as the site of ribosome synthesis of protein. 
E)  production of the cell's energy molecule, ATP.

Question 12

The four groups of protozoans are grouped by their mode of reproduction.

Accepted Answer

A) True 
 B)False

Question 13

You have isolated a new eukaryotic organism which is unicellular and performs photosynthesis. The organism is most likely classified as a(n)

Accepted Answer

A)  fungus. 
B)  animal. 
C)  plant- like protista. 
D)  bacterium. 
E)  fungi- like protista. 
A)  fungus. 
B)  animal. 
C)  plant- like protista. 
D)  bacterium. 
E)  fungi- like protista.

Question 14

Unlike antibiotics which target the 70S bacterial ribosomes, there are no known chemical substances which can bind to 80S eukaryotic ribosomes.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following are asexual fungal spores?

Accepted Answer

A)  ascospores, basidiospores, and conidiospores 
B)  any type of fungal spore can be asexual or sexual depending on how it formed 
C)  ascospores, basidiospores, and zygospores 
D)  conidiospores and sporangiospores 
E)  No types of fungal spores are asexual. 
A)  ascospores, basidiospores, and conidiospores 
B)  any type of fungal spore can be asexual or sexual depending on how it formed 
C)  ascospores, basidiospores, and zygospores 
D)  conidiospores and sporangiospores 
E)  No types of fungal spores are asexual.

Question 16

The chromatin is

Accepted Answer

A)  a liquid filling the nucleus. 
B)  an organelle which is continuous with the nuclear envelope. 
C)  the site where ribosomal subunits begin their development. 
D)  the entry and exit point for material into and out of the nucleus. 
E)  a collection of DNA and protein. 
A)  a liquid filling the nucleus. 
B)  an organelle which is continuous with the nuclear envelope. 
C)  the site where ribosomal subunits begin their development. 
D)  the entry and exit point for material into and out of the nucleus. 
E)  a collection of DNA and protein.

Question 17

A similarity between mitosis and meiosis is

Accepted Answer

A)  copying DNA before the cell divides. 
B)  production of daughter cells with the same number of chromosomes as the parent. 
C)  production of genetically unique daughter cells. 
D)  two sequential cell divisions. 
E)  sexual reproduction. 
A)  copying DNA before the cell divides. 
B)  production of daughter cells with the same number of chromosomes as the parent. 
C)  production of genetically unique daughter cells. 
D)  two sequential cell divisions. 
E)  sexual reproduction.

Question 18

Which statement does not describe helminthic parasites?

Accepted Answer

A)  All reproduce sexually. 
B)  All belong to one of two groups: roundworms or flatworms. 
C)  All are hermaphroditic. 
D)  An important mode of transmission is ingestion of the eggs or organism from feces- contaminated food and water. 
E)  All tend to have complex life cycles that can involve different host species. 
A)  All reproduce sexually. 
B)  All belong to one of two groups: roundworms or flatworms. 
C)  All are hermaphroditic. 
D)  An important mode of transmission is ingestion of the eggs or organism from feces- contaminated food and water. 
E)  All tend to have complex life cycles that can involve different host species.

Question 19

Mitochondria do not participate in which function?

Accepted Answer

A)  production of amino acids and vitamins 
B)  motility 
C)  production of ATP 
D)  programmed cell death 
E)  regulation of cell division 
A)  production of amino acids and vitamins 
B)  motility 
C)  production of ATP 
D)  programmed cell death 
E)  regulation of cell division

Question 20

Prokaryotic and eukaryotic ribosomes share which of the following features?

Accepted Answer

A)  function is making DNA 
B)  composed of protein and rRNA 
C)  contain a large and a small subunit 
D)  composed of a large and a small subunit and composed of protein and rRNA 
E)  composed of protein and rRNA, composed of a large and a small subunit, and function is making DNA 
A)  function is making DNA 
B)  composed of protein and rRNA 
C)  contain a large and a small subunit 
D)  composed of a large and a small subunit and composed of protein and rRNA 
E)  composed of protein and rRNA, composed of a large and a small subunit, and function is making DNA

Which feature is not found in protozoans?

Which pairing of organism and the chemical component of its cell wall is matched incorrectly?

A patient presents with symptoms of severe gastrointestinal distress. Bacterial and viral pathogens are ruled out. A protozoan which moves via hair- like appendages is observed upon microscopic examination of the patient's stool. The most likely cause of the infection is

A researcher discovers a chemical compound which prevents the incorporation of ergosterol in the plasma membrane We can predict that this compound would be toxic to which kinds of organisms?

Which structure pictured is the site of synthesis of proteins destined for secretion?

Eukaryotic organelles may be targeted by environmental toxins or microbial pathogens. Describe two examples of disease in humans which result from damage or malfunction to an organelle or other intracellular structure.

Cells which are active and have high energy demand will have more mitochondria than cell that are less active and have lower energy demand.

Hyphae are

The rough ER and the smooth ER are distinguished from each other by

The primary function of the nucleus is

The four groups of protozoans are grouped by their mode of reproduction.

You have isolated a new eukaryotic organism which is unicellular and performs photosynthesis. The organism is most likely classified as a(n)

Unlike antibiotics which target the 70S bacterial ribosomes, there are no known chemical substances which can bind to 80S eukaryotic ribosomes.

Which of the following are asexual fungal spores?

The chromatin is

A similarity between mitosis and meiosis is

Which statement does not describe helminthic parasites?

Mitochondria do not participate in which function?

Prokaryotic and eukaryotic ribosomes share which of the following features?

Introduction to Microbiology

Biochemistry Basics

Introduction to Prokaryotic Cells

Genetics

Viruses and Prions

Fundamentals of Microbial Growth

Microbial Metabolism

Principles of Infectious Disease and Epidemiology

Host-Microbe Interactions and Pathogenesis

Innate Immunity

Adaptive Immunity

Immune System Disorders

Vaccines and Biotechnology-Based Diagnostics and Therapeutics

Antimicrobial Drugs

Respiratory System Infections

Skin and Eye Infections

Nervous System Infections

Digestive System Infections

Urinary and Reproductive System Infections

Cardiovascular and Lymphatic Infections

Filters

Exam 4: Introduction to Eukaryotic Cells

Which feature is not found in protozoans?

Which pairing of organism and the chemical component of its cell wall is matched incorrectly?

A patient presents with symptoms of severe gastrointestinal distress. Bacterial and viral pathogens are ruled out. A protozoan which moves via hair- like appendages is observed upon microscopic examination of the patient's stool. The most likely cause of the infection is

A researcher discovers a chemical compound which prevents the incorporation of ergosterol in the plasma membrane We can predict that this compound would be toxic to which kinds of organisms?

Which structure pictured is the site of synthesis of proteins destined for secretion?

Eukaryotic organelles may be targeted by environmental toxins or microbial pathogens. Describe two examples of disease in humans which result from damage or malfunction to an organelle or other intracellular structure.

Cells which are active and have high energy demand will have more mitochondria than cell that are less active and have lower energy demand.

Hyphae are

The rough ER and the smooth ER are distinguished from each other by

The primary function of the nucleus is

The four groups of protozoans are grouped by their mode of reproduction.

You have isolated a new eukaryotic organism which is unicellular and performs photosynthesis. The organism is most likely classified as a(n)

Unlike antibiotics which target the 70S bacterial ribosomes, there are no known chemical substances which can bind to 80S eukaryotic ribosomes.

Which of the following are asexual fungal spores?

The chromatin is

A similarity between mitosis and meiosis is

Which statement does not describe helminthic parasites?

Mitochondria do not participate in which function?

Prokaryotic and eukaryotic ribosomes share which of the following features?

Introduction to Microbiology

Biochemistry Basics

Introduction to Prokaryotic Cells

Genetics

Viruses and Prions

Fundamentals of Microbial Growth

Microbial Metabolism

Principles of Infectious Disease and Epidemiology

Host-Microbe Interactions and Pathogenesis

Innate Immunity

Adaptive Immunity

Immune System Disorders

Vaccines and Biotechnology-Based Diagnostics and Therapeutics

Antimicrobial Drugs

Respiratory System Infections

Skin and Eye Infections

Nervous System Infections

Digestive System Infections

Urinary and Reproductive System Infections

Cardiovascular and Lymphatic Infections

Filters