Question 1

Where within a eukaryotic cell is ribosomal RNA (rRNA) synthesized?

Accepted Answer

A)  lysosome 
B)  nucleolus 
C)  mitochondrion 
D)  cytoplasm 
A)  lysosome 
B)  nucleolus 
C)  mitochondrion 
D)  cytoplasm B

Question 2

Discuss three findings that support the theory of primary endosymbiosis.

Accepted Answer

Possible answer topics could include any three of the following: antibiotics that disrupt the 70S ribosomes of Bacteria also disrupt protein synthesis in chloroplasts and mitochondria; chloroplast and mitochondrial ribosomes are 70S just as other prokaryotes; eukaryotic nuclei contain genes derived from Bacteria; hydrogenosomes are thought to be divergent mitochondria and they, too, contain genes found in Bacteria; mitochondria and chloroplasts contain DNA in the same form as bacteria (covalently closed circular DNA); and rRNA gene sequencing group chloroplasts and mitochondria with Bacteria.

Question 3

Peroxisomes

Accepted Answer

A)  originate in the cell by incorporating proteins and lipids from the cytoplasm. 
B)  divide in synchrony with the cell. 
C)  become membrane enclosed. 
D)  do all of the above. 
A)  originate in the cell by incorporating proteins and lipids from the cytoplasm. 
B)  divide in synchrony with the cell. 
C)  become membrane enclosed. 
D)  do all of the above. D

Question 4

The function of the parabasal body is to

Accepted Answer

A)  allow for photosynthesis to occur. 
B)  give structural support to the Golgi complex. 
C)  give structural support to the endoflagellum. 
D)  allow for the formation of energy from aerobic respiration. 
A)  allow for photosynthesis to occur. 
B)  give structural support to the Golgi complex. 
C)  give structural support to the endoflagellum. 
D)  allow for the formation of energy from aerobic respiration.

Question 5

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

Accepted Answer

A) True 
 B)False

Question 6

Hydrogenosomes cannot oxidize acetate because they lack a(n) and enzymes for the , so the acetate is excreted into the _ .

Accepted Answer

electron transport c

Question 7

All eukaryotes contain

Accepted Answer

A)  mitochondria. 
B)  hydrogenosomes. 
C)  a membrane- enclosed nucleus. 
D)  all of the above. 
A)  mitochondria. 
B)  hydrogenosomes. 
C)  a membrane- enclosed nucleus. 
D)  all of the above.

Question 8

Which statement is TRUE regarding fungal spores?

Accepted Answer

A)  Basidiospores are sexual spores. 
B)  Conidia are asexual spores. 
C)  Ascospores are sexual spores. 
D)  All of the above are true. 
A)  Basidiospores are sexual spores. 
B)  Conidia are asexual spores. 
C)  Ascospores are sexual spores. 
D)  All of the above are true.

Question 9

Diatoms are

Accepted Answer

A)  morphologically symmetric. 
B)  more closely related to slime molds than to algae. 
C)  a type of fungus. 
D)  all of the above. 
A)  morphologically symmetric. 
B)  more closely related to slime molds than to algae. 
C)  a type of fungus. 
D)  all of the above.

Question 10

The internal pH of a lysosome is the pH of the cytoplasm.

Accepted Answer

A)  approximately the same as 
B)  highly variable when compared with 
C)  100 times more acidic than 
D)  100 times more basic than 
A)  approximately the same as 
B)  highly variable when compared with 
C)  100 times more acidic than 
D)  100 times more basic than

Question 11

Most protists are motile.

Accepted Answer

A) True 
 B)False

Question 12

An individual alga often contains more than one chloroplast within its cell.

Accepted Answer

A) True 
 B)False

Question 13

The thylakoid membrane is highly impermeable to ions and other metabolites because its function is to necessary for ATP synthesis.

Accepted Answer

establish

Question 14

Consider the development of a fossil record for a watershed. A current inventory of all species already has been taken. Which microorganisms might you first consider looking for with the objective of developing a microbial fossil record? Why? Also, what might depth profiling accomplish?

Accepted Answer

The answer of Consider the development of a fossil record...

Question 15

The Apicomplexa are characterized by

Accepted Answer

A)  external digestion of food particles. 
B)  obligate parasitism of animals. 
C)  undulating motility in the adult stages. 
D)  all of the above. 
A)  external digestion of food particles. 
B)  obligate parasitism of animals. 
C)  undulating motility in the adult stages. 
D)  all of the above.

Question 16

Microscopic fungi are most phylogenetically related to animal cells.

Accepted Answer

A) True 
 B)False

Question 17

The biochemical reactions in the hydrogenosome are focused on pyruvate oxidation.

Accepted Answer

A) True 
 B)False

Question 18

A thin, crescent- shaped organism with a single flagellum originating from a basal body and which folds back laterally across the cell would most likely be a member of the genus

Accepted Answer

A)  Gambiense. 
B)  Glossina. 
C)  Entamoeba. 
D)  Trypanosoma. 
A)  Gambiense. 
B)  Glossina. 
C)  Entamoeba. 
D)  Trypanosoma.

Question 19

The is the vector involved in the transmission of African sleeping sickness.

Accepted Answer

The answer of The is the vector involved in the...

Question 20

The endoplasmic reticulum is

Accepted Answer

A)  a network of membranes continuous with the nuclear membrane. 
B)  continuous with the Golgi apparatus. 
C)  located around the nuclear membrane but is not in actual contact with it. 
D)  all of the above. 
A)  a network of membranes continuous with the nuclear membrane. 
B)  continuous with the Golgi apparatus. 
C)  located around the nuclear membrane but is not in actual contact with it. 
D)  all of the above.

Exam 20: Eukaryotic Cell Biology and Eukaryotic Microorganisms

Where within a eukaryotic cell is ribosomal RNA (rRNA) synthesized?

Discuss three findings that support the theory of primary endosymbiosis.

Peroxisomes

The function of the parabasal body is to

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

Hydrogenosomes cannot oxidize acetate because they lack a(n) and enzymes for the , so the acetate is excreted into the _ .

All eukaryotes contain

Which statement is TRUE regarding fungal spores?

Diatoms are

The internal pH of a lysosome is the pH of the cytoplasm.

Most protists are motile.

An individual alga often contains more than one chloroplast within its cell.

The thylakoid membrane is highly impermeable to ions and other metabolites because its function is to necessary for ATP synthesis.

Consider the development of a fossil record for a watershed. A current inventory of all species already has been taken. Which microorganisms might you first consider looking for with the objective of developing a microbial fossil record? Why? Also, what might depth profiling accomplish?

The Apicomplexa are characterized by

Microscopic fungi are most phylogenetically related to animal cells.

The biochemical reactions in the hydrogenosome are focused on pyruvate oxidation.

A thin, crescent- shaped organism with a single flagellum originating from a basal body and which folds back laterally across the cell would most likely be a member of the genus

The is the vector involved in the transmission of African sleeping sickness.

The endoplasmic reticulum is

Microorganisms and Microbiology

A Brief Journey to the Microbial World

Cell Structure and Function in Bacteria and Archaea

Nutrition, Culture, and Metabolism of Microorganisms

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Molecular Biology of Bacteria

Archael and Eukaryotic Molecular Biology

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Genetics of Bacteria and Arachaea

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