CH. 4 – Prokaryote Organisms
4.1 The Prokaryote’s Place in the Living World
EASY
1. How do bacteria help us as humans?
a. normal microbiota protect us from infection
b. aid digestion and produce vitamins
c. degrade environmental contaminants
d. increase soil fertility
E. All of these
EASY
2. Which of the following statements is not true?
A. A large % of microbes are pathogenic.
b. Genetically altered bacteria make pesticides, biofuels and medications.
c. Bacteria are used to store hack-proof data.
d. Bacteria are used to manufacture cheese, yogurt, pickles and chocolate.
e. All of these are true.
MEDIUM
3. Which statement is correct?
A. For every one pathogen, there are 30,000 beneficial bacteria.
b. Less than 10% of prokaryotes may be grown in a laboratory environment.
c. Bacteria out number Eukaryotes by a ratio of 10:1.
d. More than 25% of living bacteria may be considered pathogens.
HARD
4. Why is it important to learn about both Prokaryote and Eukaryote pathogens?
a. Prokaryotes have unique physical traits that allow administration of drugs that are target-specific.
b. Because all Eukaryote cells show similar features, drugs to treat Eukaryote infections must be
selectively toxic to the pathogen.
c. Viruses are not host-specific and will attack both Prokaryotes and Eukaryotes equally.
D. Only a and b answers are correct.
e. Answers a, b, and c are correct
HARD
5. Prokaryotes are the dominant life form on our planet because
A. Archaea and bacteria inhabit almost every environment on Earth.
b. Total prokaryote biomass is 100,000 times greater than the biomass of all living humans.
c. There are 10 thousand times more Archaea in oceans than there are stars in the visible universe.
d. 10X more bacteria living in and on use than there are cells in our bodies.
MEDIUM
6. How do Prokaryotes sustain life as we know it on Earth?
a. Photosynthetic Prokaryotes produce glucose and oxygen gas used by all other aerobic organisms.
b. Only Prokaryotes can perform nitrogen fixation.
c. NH4 generating bacteria live within roots of legumes and other plants.
d. Prokaryotes live in symbiotic relationships in stomachs of grazing animals to give them nutrients for
from plant material.
, 2
E. All of these are correct.
EASY
7. What atoms are cycled between living and nonliving organisms?
a. carbon b. oxygen c . phosphorus d. sulfur E. only a, b and d are correct
EASY
8. Which of the following is NOT a feature of Prokaryotes Cells?
A. 80s ribosome
b. no true membrane-bound organelles
c. replication via binary fission
d. structurally complex cell wall.
MEDIUM
9. Which of the following is the correct estimated number of species on earth?
a. plants – 1,000,000
b. Fungi – 2,000,000
c. animals – 10,000,000
D. bacteria - 1,000,000,000
EASY
10. Match the Prokaryote feature with its function.
Prokaryote Feature Function
Nucleoid C a. simple cell division
Peptidoglycan D b. responsible for protein synthesis
Binary Fission A c. one circular chromosome
70s Ribosome B d. helps form structurally complex cell wall
HARD
11. Which of the following represents a mutualistic symbiotic relationship?
A. Rhizobium and bean roots
b. Enterococcus in colon
c. Agrobacterium tumefaciens and plant cells
d. Zika virus and mosquitos
MEDIUM
12. What is the correct definition of commensalism?
a. type of symbiosis in which neither organism benefits nor is harmed
B. type of symbiosis in which one organism benefits but the other is unaffected
c. type of symbiosis in which both organisms benefit
d. type of symbiosis in which one organism benefits and the other is harmed
4.2 Bacterial Shapes and Arrangements
HARD
13. Match the species-specific modification to the description.
Species-specific Modification Description
Angular Cocci B a. curved rods
Elongated Bacilli D b. diamond shaped circles
4.1 The Prokaryote’s Place in the Living World
EASY
1. How do bacteria help us as humans?
a. normal microbiota protect us from infection
b. aid digestion and produce vitamins
c. degrade environmental contaminants
d. increase soil fertility
E. All of these
EASY
2. Which of the following statements is not true?
A. A large % of microbes are pathogenic.
b. Genetically altered bacteria make pesticides, biofuels and medications.
c. Bacteria are used to store hack-proof data.
d. Bacteria are used to manufacture cheese, yogurt, pickles and chocolate.
e. All of these are true.
MEDIUM
3. Which statement is correct?
A. For every one pathogen, there are 30,000 beneficial bacteria.
b. Less than 10% of prokaryotes may be grown in a laboratory environment.
c. Bacteria out number Eukaryotes by a ratio of 10:1.
d. More than 25% of living bacteria may be considered pathogens.
HARD
4. Why is it important to learn about both Prokaryote and Eukaryote pathogens?
a. Prokaryotes have unique physical traits that allow administration of drugs that are target-specific.
b. Because all Eukaryote cells show similar features, drugs to treat Eukaryote infections must be
selectively toxic to the pathogen.
c. Viruses are not host-specific and will attack both Prokaryotes and Eukaryotes equally.
D. Only a and b answers are correct.
e. Answers a, b, and c are correct
HARD
5. Prokaryotes are the dominant life form on our planet because
A. Archaea and bacteria inhabit almost every environment on Earth.
b. Total prokaryote biomass is 100,000 times greater than the biomass of all living humans.
c. There are 10 thousand times more Archaea in oceans than there are stars in the visible universe.
d. 10X more bacteria living in and on use than there are cells in our bodies.
MEDIUM
6. How do Prokaryotes sustain life as we know it on Earth?
a. Photosynthetic Prokaryotes produce glucose and oxygen gas used by all other aerobic organisms.
b. Only Prokaryotes can perform nitrogen fixation.
c. NH4 generating bacteria live within roots of legumes and other plants.
d. Prokaryotes live in symbiotic relationships in stomachs of grazing animals to give them nutrients for
from plant material.
, 2
E. All of these are correct.
EASY
7. What atoms are cycled between living and nonliving organisms?
a. carbon b. oxygen c . phosphorus d. sulfur E. only a, b and d are correct
EASY
8. Which of the following is NOT a feature of Prokaryotes Cells?
A. 80s ribosome
b. no true membrane-bound organelles
c. replication via binary fission
d. structurally complex cell wall.
MEDIUM
9. Which of the following is the correct estimated number of species on earth?
a. plants – 1,000,000
b. Fungi – 2,000,000
c. animals – 10,000,000
D. bacteria - 1,000,000,000
EASY
10. Match the Prokaryote feature with its function.
Prokaryote Feature Function
Nucleoid C a. simple cell division
Peptidoglycan D b. responsible for protein synthesis
Binary Fission A c. one circular chromosome
70s Ribosome B d. helps form structurally complex cell wall
HARD
11. Which of the following represents a mutualistic symbiotic relationship?
A. Rhizobium and bean roots
b. Enterococcus in colon
c. Agrobacterium tumefaciens and plant cells
d. Zika virus and mosquitos
MEDIUM
12. What is the correct definition of commensalism?
a. type of symbiosis in which neither organism benefits nor is harmed
B. type of symbiosis in which one organism benefits but the other is unaffected
c. type of symbiosis in which both organisms benefit
d. type of symbiosis in which one organism benefits and the other is harmed
4.2 Bacterial Shapes and Arrangements
HARD
13. Match the species-specific modification to the description.
Species-specific Modification Description
Angular Cocci B a. curved rods
Elongated Bacilli D b. diamond shaped circles
