Question 1

Which statement below is FALSE regarding mitochondria and chloroplasts?

Accepted Answer

A)  Both contain DNA. 
B)  Both replicate independently of the host cell. 
C)  Both function in energy generation. 
D)  Both contain the enzymes for the glycolytic pathway. 
E)  Both contain inner membranes. 
A)  Both contain DNA. 
B)  Both replicate independently of the host cell. 
C)  Both function in energy generation. 
D)  Both contain the enzymes for the glycolytic pathway. 
E)  Both contain inner membranes. D

Question 2

The slime-mold Dictyostelium discoideum is classified as a fungus.

Accepted Answer

A) True 
 B)False  False

Question 3

Eukaryal microbes called amitochondriates lack mitochondria.

Accepted Answer

A) True 
 B)False  True

Question 4

Microfilament are made of the protein ___.

Accepted Answer

The answer of Microfilament are made of the protein ___....

Question 5

Plasmodium falciparum causes the disease ______.

Accepted Answer

The answer of Plasmodium falciparum causes the disease ______....

Question 6

Chloroplasts most likely originated from which of these independent organisms?

Accepted Answer

A)  alpha-proteobacteria 
B)  anoxygenic photobacteria 
C)  gamma-proteobacteria 
D)  purple sulfur bacteria 
E)  cyanobacteriia 
A)  alpha-proteobacteria 
B)  anoxygenic photobacteria 
C)  gamma-proteobacteria 
D)  purple sulfur bacteria 
E)  cyanobacteriia

Question 7

A haploid Chlamydomonas replicates asexually under favorable environmental conditions.What happens when growth conditions deteriorate?

Accepted Answer

A)  It becomes motile. 
B)  It stops growing. 
C)  It changes morphologically to form large aggregates. 
D)  It changes into a gamete and fuses with another gamete. 
E)  It changes morphologically into a spore for survival. 
A)  It becomes motile. 
B)  It stops growing. 
C)  It changes morphologically to form large aggregates. 
D)  It changes into a gamete and fuses with another gamete. 
E)  It changes morphologically into a spore for survival.

Question 8

The Endosymbiotic Theory is used to explain the origin of the ____ in the eukaryotic cell.

Accepted Answer

A)  chromosome 
B)  ribosome 
C)  mitochondrion 
D)  lysosome 
E)  vacuole 
A)  chromosome 
B)  ribosome 
C)  mitochondrion 
D)  lysosome 
E)  vacuole

Question 9

Which of these best describes the process of meiosis in eukaryal cells?

Accepted Answer

A)  Asexual reproduction. 
B)  Two rounds of DNA replication followed by cell division. 
C)  The combining of two gametes. 
D)  DNA replication followed by two cell divisions. 
E)  The asexual production of diploid cells. 
A)  Asexual reproduction. 
B)  Two rounds of DNA replication followed by cell division. 
C)  The combining of two gametes. 
D)  DNA replication followed by two cell divisions. 
E)  The asexual production of diploid cells.

Question 10

Haploid Dictyostelium replicate by mitosis when nutrients are plentiful.What happens when growth conditions deteriorate?

Accepted Answer

A)  The cells change morphologically into a resilient structure called a cyst. 
B)  The cells change into a gamete and fuse with another gamete to produce a zygote. 
C)  The cells become motile by means of a flagellum and move on to another food source. 
D)  The cells aggregate to form a multicellular slug. 
E)  The cells stop growing. 
A)  The cells change morphologically into a resilient structure called a cyst. 
B)  The cells change into a gamete and fuse with another gamete to produce a zygote. 
C)  The cells become motile by means of a flagellum and move on to another food source. 
D)  The cells aggregate to form a multicellular slug. 
E)  The cells stop growing.

Question 11

Aggregate formation in Dictyostelium cells is the result of a cell signaling mechanism that uses cyclic AMP as a signal molecule.

Accepted Answer

A) True 
 B)False

Question 12

Eukaryal proteins that are secreted outside of the cell undergo modification before secretion.Which organelles are involved in this secretion pathway?

Accepted Answer

A)  the mitochondria and endoplasmic reticulum 
B)  the mitochondria and Golgi apparatus 
C)  the endoplasmic reticulum and Golgi apparatus 
D)  the endoplasmic reticulum and lysosome 
E)  the lysosome and mitochondria 
A)  the mitochondria and endoplasmic reticulum 
B)  the mitochondria and Golgi apparatus 
C)  the endoplasmic reticulum and Golgi apparatus 
D)  the endoplasmic reticulum and lysosome 
E)  the lysosome and mitochondria

Question 13

Which of these organisms causes Athlete's foot?

Accepted Answer

A)  a slime mold 
B)  a fungus 
C)  an amoeba 
D)  a protozoan 
E)  a bacterium 
A)  a slime mold 
B)  a fungus 
C)  an amoeba 
D)  a protozoan 
E)  a bacterium

Question 14

What is the basic chemical structure of a phospholipid in a eukaryal cell?

Accepted Answer

A)  A glycerol molecule with cholesterol attached. 
B)  A fatty acid with a phosphate attached at the carboxyl end. 
C)  A glycerol molecule with two fatty acids and a phosphate attached. 
D)  A glycerol molecule with two phosphates and a fatty acid attached. 
E)  A glycerol molecule with cholesterol and phosphate attached. 
A)  A glycerol molecule with cholesterol attached. 
B)  A fatty acid with a phosphate attached at the carboxyl end. 
C)  A glycerol molecule with two fatty acids and a phosphate attached. 
D)  A glycerol molecule with two phosphates and a fatty acid attached. 
E)  A glycerol molecule with cholesterol and phosphate attached.

Question 15

Microtubules are composed of which protein?

Accepted Answer

A)  actin 
B)  myosin 
C)  tubulin 
D)  flagellin 
E)  keratin 
A)  actin 
B)  myosin 
C)  tubulin 
D)  flagellin 
E)  keratin

Question 16

Amebic dysentery is caused by Shigella sonnei.

Accepted Answer

A) True 
 B)False

Question 17

The result of meiosis is the production of:

Accepted Answer

A)  four haploid cells. 
B)  two diploid cells. 
C)  two haploid cells. 
D)  four diploid cells. 
E)  two haploid cells and two diploid cells. 
A)  four haploid cells. 
B)  two diploid cells. 
C)  two haploid cells. 
D)  four diploid cells. 
E)  two haploid cells and two diploid cells.

Question 18

Amitochondriates are eukaryal microbes that lack mitochondria.What evidence shows that some of these microbes may at one time have had mitochondria?

Accepted Answer

A)  They can respire on oxygen. 
B)  They have peptidoglycan in their cell wall. 
C)  They have 70S ribosomes. 
D)  They have some alpha-proteobacterium DNA in their chromosome. 
E)  They have circular chromosomes. 
A)  They can respire on oxygen. 
B)  They have peptidoglycan in their cell wall. 
C)  They have 70S ribosomes. 
D)  They have some alpha-proteobacterium DNA in their chromosome. 
E)  They have circular chromosomes.

Question 19

When Saccharomyces undergoes meiosis,it forms four haploid cells called ___.

Accepted Answer

The answer of When Saccharomyces undergoes meiosis,it forms four haploid...

Question 20

Describe the differences between Bacteria,Archaea,and Eukarya in regards to cell walls and plasma membranes.

Accepted Answer

Bacteria, Archaea, and Eukarya are the t

Exam 3: Eukaryal Microbes

Which statement below is FALSE regarding mitochondria and chloroplasts?

The slime-mold Dictyostelium discoideum is classified as a fungus.

Eukaryal microbes called amitochondriates lack mitochondria.

Microfilament are made of the protein ___.

Plasmodium falciparum causes the disease ______.

Chloroplasts most likely originated from which of these independent organisms?

A haploid Chlamydomonas replicates asexually under favorable environmental conditions.What happens when growth conditions deteriorate?

The Endosymbiotic Theory is used to explain the origin of the ____ in the eukaryotic cell.

Which of these best describes the process of meiosis in eukaryal cells?

Haploid Dictyostelium replicate by mitosis when nutrients are plentiful.What happens when growth conditions deteriorate?

Aggregate formation in Dictyostelium cells is the result of a cell signaling mechanism that uses cyclic AMP as a signal molecule.

Eukaryal proteins that are secreted outside of the cell undergo modification before secretion.Which organelles are involved in this secretion pathway?

Which of these organisms causes Athlete's foot?

What is the basic chemical structure of a phospholipid in a eukaryal cell?

Microtubules are composed of which protein?

Amebic dysentery is caused by Shigella sonnei.

The result of meiosis is the production of:

Amitochondriates are eukaryal microbes that lack mitochondria.What evidence shows that some of these microbes may at one time have had mitochondria?

When Saccharomyces undergoes meiosis,it forms four haploid cells called ___.

Describe the differences between Bacteria,Archaea,and Eukarya in regards to cell walls and plasma membranes.

The Microbial World

Bacteria

Archaea

Viruses

Cultivating Microorganisms

DNA Replication and Gene Expression

Viral Replication Strategies

Bacterial Genetic Analysis

Microbial Genomics

Regulation of Gene Expression

Microbial Biotechnology

Metabolism

Biogeochemical Cycles

Microbial Ecosystems

The Microbiology of Food and Water

Microbial Symbionts

Introduction to Infectious Diseases

Innate Host Defenses Against Microbial Invasion

Adaptive Immunity

Survival in the Host

Viral Pathogenesis

Eukaryal Microbe Pathogenesis

Control of Infectious Diseases

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