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CH. 5 – Eukaryotic Organisms
5.1 The Eukaryotic Cell
EASY
1. How long ago did Eukaryotic cells evolve?
a. 1 billion years ago B. 1.7 billion years ago c. 2 billion years ago d. 2.4 billion years ago
MEDIUM
2. Why is it critical in Microbiology to understand Eukaryotic microorganisms?
a. because phytoplankton are the foundation of every aquatic food web
b. because photosynthetic Eukaryotes produce oxygen gas as a by-product thereby providing it for
aerobic organisms
c. because all Eukaryotic microbes are pathogens to humans, other animals and plants
D. only answers a and b are correct
e. all are correct
EASY
3. Which of the following descriptions of Eukaryotes is not true?
a. They are 10-100X larger than Prokaryotes.
b. They possess numerous membrane-bound organelles.
c. They have a membrane-bound nucleus.
D. Their typical size is 100 to 1000 micrometers.
MEDIUM
4. Why can small cells carry out diffusion better than larger cells?
a. smaller surface area relative to internal volume
B. greater surface area relative to internal volume
c. surface area is relatively equal to internal volume
d. surface area is 4X as great as internal volume
HARD
5. What added feature of a cell can substantially increase a cell’s surface area available for diffusion
without changing the internal volume very much?
a. increase in number of internal membrane-bound organelles
b. decrease in number of internal membrane-bound organelles
C. creation of long thin projections of cell membrane
d. addition of flagella or cilia to outside of microorganism
EASY
6. Match the Eukaryotic organelle with its function:
Organelle Function
SER C a. production of rRNA
Mitochondrion E b. protein synthesis
80s ribosomes B c. lipid biosynthesis
Nucleolus A d. photosynthesis
Chloroplast D e. aerobic respiration
, 2
MEDIUM
7. You will find this membrane-bound organelle present in plant cells only:
A. central vacuole b. mitochondrion c. SER d. Golgi apparatus
HARD
8. What is the correct order of creation of secretory proteins?
1. nucleolus -> rRNA
2. rRNA and proteins -> ribosomes
3. vesicles modified -> Golgi apparatus
4. membrane-bound ribosomes on ER -> protein vesicles
5. vesicles released from maturing face of Golgi -> fusion with cell membrane
A. 1, 2, 4, 3, 5 b. 1, 4, 2, 3, 5 c. 1, 3, 4, 2, 5 d. 2, 1, 3, 4, 5
MEDIUM
9. What is the purpose of the Golgi apparatus?
a. addition of sugar units to crude proteins
b. proteins refined by series of enzymes in different Golgi cisterna
c. modification and export of newly built proteins
d. regulation of protein synthesis
E. all of these with the exception of answer D are correct
EASY
10. Which of these represent a type of endocytosis?
a. phagocytosis
b. pinocytosis
c. amoebacytosis
d. only a and c are correct
E. only a and b are correct
EASY
11. All of these are accurate descriptions of the lysosome and its function except
a. are produced by the Golgi apparatus
b. are loaded with acid hydrolases
C. produce acid hydrolases that only work outside the lysosome
d. are responsible for degradation of bacterial pathogens
e. fuse with phagosomes to form secondary lysosomes
MEDIUM
12. Which of the following is not a correct match?
a. lysosome/produce acid hydrolase
B. peroxisome/produce hydrogen peroxide
c. peroxisome/produce catalase
d. lysosome/internal pH of 5
CH. 5 – Eukaryotic Organisms
5.1 The Eukaryotic Cell
EASY
1. How long ago did Eukaryotic cells evolve?
a. 1 billion years ago B. 1.7 billion years ago c. 2 billion years ago d. 2.4 billion years ago
MEDIUM
2. Why is it critical in Microbiology to understand Eukaryotic microorganisms?
a. because phytoplankton are the foundation of every aquatic food web
b. because photosynthetic Eukaryotes produce oxygen gas as a by-product thereby providing it for
aerobic organisms
c. because all Eukaryotic microbes are pathogens to humans, other animals and plants
D. only answers a and b are correct
e. all are correct
EASY
3. Which of the following descriptions of Eukaryotes is not true?
a. They are 10-100X larger than Prokaryotes.
b. They possess numerous membrane-bound organelles.
c. They have a membrane-bound nucleus.
D. Their typical size is 100 to 1000 micrometers.
MEDIUM
4. Why can small cells carry out diffusion better than larger cells?
a. smaller surface area relative to internal volume
B. greater surface area relative to internal volume
c. surface area is relatively equal to internal volume
d. surface area is 4X as great as internal volume
HARD
5. What added feature of a cell can substantially increase a cell’s surface area available for diffusion
without changing the internal volume very much?
a. increase in number of internal membrane-bound organelles
b. decrease in number of internal membrane-bound organelles
C. creation of long thin projections of cell membrane
d. addition of flagella or cilia to outside of microorganism
EASY
6. Match the Eukaryotic organelle with its function:
Organelle Function
SER C a. production of rRNA
Mitochondrion E b. protein synthesis
80s ribosomes B c. lipid biosynthesis
Nucleolus A d. photosynthesis
Chloroplast D e. aerobic respiration
, 2
MEDIUM
7. You will find this membrane-bound organelle present in plant cells only:
A. central vacuole b. mitochondrion c. SER d. Golgi apparatus
HARD
8. What is the correct order of creation of secretory proteins?
1. nucleolus -> rRNA
2. rRNA and proteins -> ribosomes
3. vesicles modified -> Golgi apparatus
4. membrane-bound ribosomes on ER -> protein vesicles
5. vesicles released from maturing face of Golgi -> fusion with cell membrane
A. 1, 2, 4, 3, 5 b. 1, 4, 2, 3, 5 c. 1, 3, 4, 2, 5 d. 2, 1, 3, 4, 5
MEDIUM
9. What is the purpose of the Golgi apparatus?
a. addition of sugar units to crude proteins
b. proteins refined by series of enzymes in different Golgi cisterna
c. modification and export of newly built proteins
d. regulation of protein synthesis
E. all of these with the exception of answer D are correct
EASY
10. Which of these represent a type of endocytosis?
a. phagocytosis
b. pinocytosis
c. amoebacytosis
d. only a and c are correct
E. only a and b are correct
EASY
11. All of these are accurate descriptions of the lysosome and its function except
a. are produced by the Golgi apparatus
b. are loaded with acid hydrolases
C. produce acid hydrolases that only work outside the lysosome
d. are responsible for degradation of bacterial pathogens
e. fuse with phagosomes to form secondary lysosomes
MEDIUM
12. Which of the following is not a correct match?
a. lysosome/produce acid hydrolase
B. peroxisome/produce hydrogen peroxide
c. peroxisome/produce catalase
d. lysosome/internal pH of 5
