Question 1

The exterior surface of a virus is usually ________.

Accepted Answer

A)  an RNA molecule 
B)  a protein coat 
C)  the nucleic acid core 
D)  the envelope 
E)  a DNA molecule 
A)  an RNA molecule 
B)  a protein coat 
C)  the nucleic acid core 
D)  the envelope 
E)  a DNA molecule

Question 2

Which of the following is NOT a virus?

Accepted Answer

A)  HIV 
B)  bacteriophage 
C)  herpes 
D)  Epstein-Barr 
E)  None of these answers are correct 
A)  HIV 
B)  bacteriophage 
C)  herpes 
D)  Epstein-Barr 
E)  None of these answers are correct

Question 3

The red pigment that enables salt bacteria to carry on a simple form of photosynthesis is

Accepted Answer

A)  anthocyanin. 
B)  carotene. 
C)  phycocyanin. 
D)  phycoerythrin. 
E)  bacterial rhodopsin. 
A)  anthocyanin. 
B)  carotene. 
C)  phycocyanin. 
D)  phycoerythrin. 
E)  bacterial rhodopsin.

Question 4

Approximately ________ of bacteria are useful to humans, or harmless.

Accepted Answer

A)  10% 
B)  20% 
C)  50% 
D)  70% 
E)  90% 
A)  10% 
B)  20% 
C)  50% 
D)  70% 
E)  90%

Question 5

Blue-green bacteria possess chlorophyll a, but not chlorophyll b.

Accepted Answer

A) True 
 B)False

Question 6

The methane bacteria derive their energy from the generation of methane gas from hydrogen and

Accepted Answer

A)  carbon dioxide. 
B)  oxygen. 
C)  nitrogen. 
D)  water. 
E)  sulphur. 
A)  carbon dioxide. 
B)  oxygen. 
C)  nitrogen. 
D)  water. 
E)  sulphur.

Question 7

Bacteria may be classified by

Accepted Answer

A)  Gram staining. 
B)  shape. 
C)  colored pigments. 
D)  size. 
E)  Both Gram staining and shape are correct 
A)  Gram staining. 
B)  shape. 
C)  colored pigments. 
D)  size. 
E)  Both Gram staining and shape are correct

Question 8

Many bacteria are motile because they possess bacterial flagella.

Accepted Answer

A) True 
 B)False

Question 9

Blue-green bacteria, as well as certain other bacteria, can fix nitrogen.

Accepted Answer

A) True 
 B)False

Question 10

Bacteriophages are ________.

Accepted Answer

A)  bacteria that cause Chagas disease 
B)  viruses that attack human cells 
C)  protozoans that infect red blood cells 
D)  harmless bacteria used in the production of vinegar 
E)  viruses that attach and kill bacteria 
A)  bacteria that cause Chagas disease 
B)  viruses that attack human cells 
C)  protozoans that infect red blood cells 
D)  harmless bacteria used in the production of vinegar 
E)  viruses that attach and kill bacteria

Question 11

The toxins of tetanus and botulism bacteria are considerably more powerful than strychnine.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following is NOT similar to chlorophyll a of higher plants?

Accepted Answer

A)  chlorophyll b 
B)  bacteriochlorophyll 
C)  chlorophyll c 
D)  chlorobium chlorophyll 
E)  chlorophyll d 
A)  chlorophyll b 
B)  bacteriochlorophyll 
C)  chlorophyll c 
D)  chlorobium chlorophyll 
E)  chlorophyll d

Question 13

Which statement about Koch's postulates is INCORRECT?

Accepted Answer

A)  Koch's postulates are a set of rules to identify the microorganism that causes a particular disease. 
B)  The microorganism that supposedly causes the disease must be present in all incidences of the disease. 
C)  If a microorganism is isolated and purified from a diseased individual and subsequently causes disease symptoms when injected into a healthy host, there is suggestive evidence that the microorganism causes the disease. 
D)  Isolation of a microorganism from a diseased individual is sufficient evidence for that organism being the causative agent of the disease. 
E)  The final step of Koch's rules is to compare the original pure culture with the culture isolated from the experimentally injected host.. 
A)  Koch's postulates are a set of rules to identify the microorganism that causes a particular disease. 
B)  The microorganism that supposedly causes the disease must be present in all incidences of the disease. 
C)  If a microorganism is isolated and purified from a diseased individual and subsequently causes disease symptoms when injected into a healthy host, there is suggestive evidence that the microorganism causes the disease. 
D)  Isolation of a microorganism from a diseased individual is sufficient evidence for that organism being the causative agent of the disease. 
E)  The final step of Koch's rules is to compare the original pure culture with the culture isolated from the experimentally injected host..

Question 14

All viruses have at their core the nucleic acid DNA.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following features is found only in bacteria?

Accepted Answer

A)  lack of membrane bound compartments within the protoplast 
B)  cells with a distinct nucleus 
C)  chloroplasts in a variety of shapes and sizes 
D)  capacity to reproduce only within other living cells 
E)  capacity to undergo both mitosis and meiosis 
A)  lack of membrane bound compartments within the protoplast 
B)  cells with a distinct nucleus 
C)  chloroplasts in a variety of shapes and sizes 
D)  capacity to reproduce only within other living cells 
E)  capacity to undergo both mitosis and meiosis

Question 16

Decomposed organic matter, especially plant matter, improves soil water holding capacity and soil structure but it isn't a very good fertilizer.

Accepted Answer

A) True 
 B)False

Question 17

An organism that has no nuclear envelope and divides by fission would be a

Accepted Answer

A)  protist. 
B)  fungus. 
C)  prokaryote. 
D)  plant. 
E)  Both fungus and prokaryote are correct. 
A)  protist. 
B)  fungus. 
C)  prokaryote. 
D)  plant. 
E)  Both fungus and prokaryote are correct.

Question 18

Photosynthetic, algal-like bacteria are

Accepted Answer

A)  archaea. 
B)  cyanobacteria. 
C)  methanogens. 
D)  chlorophytes. 
E)  rickettsias. 
A)  archaea. 
B)  cyanobacteria. 
C)  methanogens. 
D)  chlorophytes. 
E)  rickettsias.

Question 19

Which disease bacteria usually gain access to their victims through contamination of food and drink?

Accepted Answer

A)  chlamydias 
B)  cholera bacteria 
C)  syphilis 
D)  tetanus bacteria 
E)  bubonic plague bacteria 
A)  chlamydias 
B)  cholera bacteria 
C)  syphilis 
D)  tetanus bacteria 
E)  bubonic plague bacteria

Question 20

There are no known useful viruses.

Accepted Answer

A) True 
 B)False

Exam 17: Domain Kingdom Bacteria, Domain Kingdom Archaea, and Viruses

The exterior surface of a virus is usually ________.

Which of the following is NOT a virus?

The red pigment that enables salt bacteria to carry on a simple form of photosynthesis is

Approximately ________ of bacteria are useful to humans, or harmless.

Blue-green bacteria possess chlorophyll a, but not chlorophyll b.

The methane bacteria derive their energy from the generation of methane gas from hydrogen and

Bacteria may be classified by

Many bacteria are motile because they possess bacterial flagella.

Blue-green bacteria, as well as certain other bacteria, can fix nitrogen.

Bacteriophages are ________.

The toxins of tetanus and botulism bacteria are considerably more powerful than strychnine.

Which of the following is NOT similar to chlorophyll a of higher plants?

Which statement about Koch's postulates is INCORRECT?

All viruses have at their core the nucleic acid DNA.

Which of the following features is found only in bacteria?

Decomposed organic matter, especially plant matter, improves soil water holding capacity and soil structure but it isn't a very good fertilizer.

An organism that has no nuclear envelope and divides by fission would be a

Photosynthetic, algal-like bacteria are

Which disease bacteria usually gain access to their victims through contamination of food and drink?

There are no known useful viruses.

What Is Plant Biology

The Nature of Life

Cells

Tissues

Roots and Soils

Stems

Leaves

Flowers, Fruits, and Seeds

Water in Plants

Plant Metabolism

Growth

Meiosis and Alternation of Generation

Genetics

Plant Breeding and Propagation

Evolution

Plant Names and Classification

Kingdom Protista

Kingdom Fungi

Introduction to the Plant Kingdom: Bryophytes

The Seedless Vascular Plants - Ferns and Their Relatives

Introduction to Seed Plants: Gymnosperms

Seed Plants: Angiosperms

Flowering Plants and Civilization

Ecology

Biomes

Filters