Course Title
Module #5 Student Activity Sheet
LESSON TITLE: MICROBIAL DIVERSITY: ACCELULARMICROBRES
A. LESSON PREVIEW/REVIEW (5 minutes)
Instruction: Enumerate the five-kingdom system of classification.
1. Bacteria and archaea are in the Kingdom Prokaryote (or Monera)
2. Algae and protozoa are in the Kingdom Protista (organisms in this kingdom are referred
to as protists)
3. Fungi are in the Kingdom Fungi
4. Plants are in the Kingdom Plantae
5. Animals are in the Kingdom Animalia (Although humans are in the Kingdom Animalia, in
this book, the word “animals” refers to animals other than humans.)
CHECK FOR UNDERSTANDING (30 minutes)
You will answer and rationalize this by yourself. This will be recorded as your quiz. One (1) point
will be given to correct answer and another one (1) point for the correct ratio. Superimpositions
or erasures in you answer/ratio is not allowed.
You are given 30 minutes for this activity:
1. Which one of the following steps occurs during the multiplication of animal viruses, but not
during the multiplication of bacteriophages?
a. assembly
b. biosynthesis
c. penetration
d. uncoating
Answer: D
Rationale: Penetration , the entire virion usually enters the host cell, sometimes because the cell
phagocytizes the virus. Uncoating —whereby the viral nucleic acid escapes from the capsid. Biosynthesis ,
whereby many viral pieces (viral nucleic acid and viral proteins) are produced. This step can be quite
complicated, depending on what type of virus infected the cell. Some animal viruses do not initiate biosynthesis
right away, but rather, remain latent within the host cell for variable periods. Assembly — involves fitting the
virus pieces together to produce complete virions.
2. Which one of the following diseases or groups of diseases is not caused by prions?
a. certain plant diseases
b. chronic wasting disease of deer and elk
c. Creutzfeldt-Jacob disease of humans
d. “mad cow disease”
Answer: A
Rationale: Prions are infectious protein molecules that cause a variety of animal and human diseases and
Viroidsare infectious RNA molecules that cause a variety of plant diseases.
, 4. Viruses are said to have specific properties that distinguish them from living cells. EXCEPT?
a. They are unable to replicate (multiply) on their own; their replication is directed by the viral
nucleic acid once it has been introduced into a host cell.
b. They divide by binary fission, mitosis, or meiosis.
c. They lack the genes and enzymes necessary for energy production.
d. They depend on the ribosomes, enzymes, and metabolites (“building blocks”) of the host cell
for protein and nucleic acid production
Answer: B
Rationale: Viruses are said to have five specific properties that distinguish them from living cells: The vast
majority of viruses possess either DNA or RNA, unlike living cells, which possess both. They are unable to
replicate (multiply) on their own; their replication is directed by the viral nucleic acid once it has been
introduced into a host cell. Unlike cells, they do not divide by binary fission, mitosis, or meiosis. They lack the
genes and enzymes necessary for energy production.They depend on the ribosomes, enzymes, and metabolites
(“building blocks”) of the host cell for protein and nucleic acid production
4. Viruses are said to have specific properties that distinguish them from living cells. EXCEPT?
a. They are unable to replicate (multiply) on their own; their replication is directed by the viral
nucleic acid once it has been introduced into a host cell.
b. They divide by binary fission, mitosis, or meiosis.
c. They lack the genes and enzymes necessary for energy production.
d. They depend on the ribosomes, enzymes, and metabolites (“building blocks”) of the host cell
for protein and nucleic acid production
Answer: B
Rationale: Viruses are said to have five specific properties that distinguish them from living cells: The vast
majority of viruses possess either DNA or RNA, unlike living cells, which possess both. They are unable to
replicate (multiply) on their own; their replication is directed by the viral nucleic acid once it has been
introduced into a host cell. Unlike cells, they do not divide by binary fission, mitosis, or meiosis. They lack the
genes and enzymes necessary for energy production.They depend on the ribosomes, enzymes, and metabolites
(“building blocks”) of the host cell for protein and nucleic acid production
5. The viruses that infect bacteria are known as?
a. temperate phages
b. icosahedron bacteriophages
c. virulent bacteriophages
d. bacteriophages
Answer: D
Rationale: The viruses that infect bacteria are known as bacteriophages (or simply, phages). Like all
viruses, they are obligate intracellular pathogens, in that they must enter a bacterial cell to replicate
6. A disease that was once common among natives in Papua, New Guinea, where women and
children ate human brains as part of a traditional burial custom (ritualistic cannibalism).
a. kuru
Module #5 Student Activity Sheet
LESSON TITLE: MICROBIAL DIVERSITY: ACCELULARMICROBRES
A. LESSON PREVIEW/REVIEW (5 minutes)
Instruction: Enumerate the five-kingdom system of classification.
1. Bacteria and archaea are in the Kingdom Prokaryote (or Monera)
2. Algae and protozoa are in the Kingdom Protista (organisms in this kingdom are referred
to as protists)
3. Fungi are in the Kingdom Fungi
4. Plants are in the Kingdom Plantae
5. Animals are in the Kingdom Animalia (Although humans are in the Kingdom Animalia, in
this book, the word “animals” refers to animals other than humans.)
CHECK FOR UNDERSTANDING (30 minutes)
You will answer and rationalize this by yourself. This will be recorded as your quiz. One (1) point
will be given to correct answer and another one (1) point for the correct ratio. Superimpositions
or erasures in you answer/ratio is not allowed.
You are given 30 minutes for this activity:
1. Which one of the following steps occurs during the multiplication of animal viruses, but not
during the multiplication of bacteriophages?
a. assembly
b. biosynthesis
c. penetration
d. uncoating
Answer: D
Rationale: Penetration , the entire virion usually enters the host cell, sometimes because the cell
phagocytizes the virus. Uncoating —whereby the viral nucleic acid escapes from the capsid. Biosynthesis ,
whereby many viral pieces (viral nucleic acid and viral proteins) are produced. This step can be quite
complicated, depending on what type of virus infected the cell. Some animal viruses do not initiate biosynthesis
right away, but rather, remain latent within the host cell for variable periods. Assembly — involves fitting the
virus pieces together to produce complete virions.
2. Which one of the following diseases or groups of diseases is not caused by prions?
a. certain plant diseases
b. chronic wasting disease of deer and elk
c. Creutzfeldt-Jacob disease of humans
d. “mad cow disease”
Answer: A
Rationale: Prions are infectious protein molecules that cause a variety of animal and human diseases and
Viroidsare infectious RNA molecules that cause a variety of plant diseases.
, 4. Viruses are said to have specific properties that distinguish them from living cells. EXCEPT?
a. They are unable to replicate (multiply) on their own; their replication is directed by the viral
nucleic acid once it has been introduced into a host cell.
b. They divide by binary fission, mitosis, or meiosis.
c. They lack the genes and enzymes necessary for energy production.
d. They depend on the ribosomes, enzymes, and metabolites (“building blocks”) of the host cell
for protein and nucleic acid production
Answer: B
Rationale: Viruses are said to have five specific properties that distinguish them from living cells: The vast
majority of viruses possess either DNA or RNA, unlike living cells, which possess both. They are unable to
replicate (multiply) on their own; their replication is directed by the viral nucleic acid once it has been
introduced into a host cell. Unlike cells, they do not divide by binary fission, mitosis, or meiosis. They lack the
genes and enzymes necessary for energy production.They depend on the ribosomes, enzymes, and metabolites
(“building blocks”) of the host cell for protein and nucleic acid production
4. Viruses are said to have specific properties that distinguish them from living cells. EXCEPT?
a. They are unable to replicate (multiply) on their own; their replication is directed by the viral
nucleic acid once it has been introduced into a host cell.
b. They divide by binary fission, mitosis, or meiosis.
c. They lack the genes and enzymes necessary for energy production.
d. They depend on the ribosomes, enzymes, and metabolites (“building blocks”) of the host cell
for protein and nucleic acid production
Answer: B
Rationale: Viruses are said to have five specific properties that distinguish them from living cells: The vast
majority of viruses possess either DNA or RNA, unlike living cells, which possess both. They are unable to
replicate (multiply) on their own; their replication is directed by the viral nucleic acid once it has been
introduced into a host cell. Unlike cells, they do not divide by binary fission, mitosis, or meiosis. They lack the
genes and enzymes necessary for energy production.They depend on the ribosomes, enzymes, and metabolites
(“building blocks”) of the host cell for protein and nucleic acid production
5. The viruses that infect bacteria are known as?
a. temperate phages
b. icosahedron bacteriophages
c. virulent bacteriophages
d. bacteriophages
Answer: D
Rationale: The viruses that infect bacteria are known as bacteriophages (or simply, phages). Like all
viruses, they are obligate intracellular pathogens, in that they must enter a bacterial cell to replicate
6. A disease that was once common among natives in Papua, New Guinea, where women and
children ate human brains as part of a traditional burial custom (ritualistic cannibalism).
a. kuru
