Question 1

Plasmodium illustrate feeding characteristics of a(n)________.

Accepted Answer

A) slime mold 
B) ciliate 
C) apicomplexan 
D) algae 
A) slime mold 
B) ciliate 
C) apicomplexan 
D) algae C

Question 2

What is an implication of the fact that tests were conducted after a period of dry weather?

Accepted Answer

A) Dry weather creates harsher sampling conditions for scientists. 
B) If more periods of rainfall occur after the testing,bacteria that secrete endotoxins may increase,thereby increasing endotoxin levels. 
C) Dry weather increases the amount of carbon available for the endotoxin bacteria to use for organic compound production. 
D) The endotoxin bacteria are better able to be used for bioremediation efforts in dry weather than in wet weather. 
A) Dry weather creates harsher sampling conditions for scientists. 
B) If more periods of rainfall occur after the testing,bacteria that secrete endotoxins may increase,thereby increasing endotoxin levels. 
C) Dry weather increases the amount of carbon available for the endotoxin bacteria to use for organic compound production. 
D) The endotoxin bacteria are better able to be used for bioremediation efforts in dry weather than in wet weather. B

Question 3

If you were to view this organism with the right microscope you could see that the entire stalk is covered with smaller hairs than the ones on the opening.What might be the function of these smaller hairs on the stalk?

Accepted Answer

A) camouflage 
B) movement 
C) aerobic respiration 
D) spore production 
A) camouflage 
B) movement 
C) aerobic respiration 
D) spore production B

Question 4

What accounts for the similarity between seaweeds and plants?

Accepted Answer

A) Plants are the ancestors of seaweeds. 
B) convergent evolution 
C) evolutionary fitness 
D) Seaweeds are aquatic plants. 
A) Plants are the ancestors of seaweeds. 
B) convergent evolution 
C) evolutionary fitness 
D) Seaweeds are aquatic plants.

Question 5

You discover a unicellular organism that moves by what appear to be pseudopodia.You conclude that this organism is ________.

Accepted Answer

A) either a type of amoeba or a type of slime mold 
B) a type of bacterium 
C) a type of alga 
D) either a type of ciliate or a type of apicomplexan 
A) either a type of amoeba or a type of slime mold 
B) a type of bacterium 
C) a type of alga 
D) either a type of ciliate or a type of apicomplexan

Question 6

Which of the following prokaryotes aid digestion in cattle,deer,and other animals that obtain nutrition from cellulose?

Accepted Answer

A) halophiles 
B) dinoflagellates 
C) methanogens 
D) cocci 
A) halophiles 
B) dinoflagellates 
C) methanogens 
D) cocci

Question 7

Eukaryotes arose about ________ years after the first prokaryotes.

Accepted Answer

A) 3)0 million 
B) 1)7 billion 
C) 3)5 billion 
D) 4)0 billion 
A) 3)0 million 
B) 1)7 billion 
C) 3)5 billion 
D) 4)0 billion

Question 8

What was the first stage of the process that led to the abiotic origin of life?

Accepted Answer

A) synthesis of monomers,such as amino acids and nucleotides 
B) origin of self-replicating molecules 
C) synthesis of polymers,such as proteins and nucleic acids 
D) formation of pre-cells 
A) synthesis of monomers,such as amino acids and nucleotides 
B) origin of self-replicating molecules 
C) synthesis of polymers,such as proteins and nucleic acids 
D) formation of pre-cells

Question 9

RNAs that can act as enzymes are called ________.

Accepted Answer

A) ribozymes 
B) ATPs 
C) lysosomes 
D) prokaryotes 
A) ribozymes 
B) ATPs 
C) lysosomes 
D) prokaryotes

Question 10

Prokaryotes reproduce by means of ________.

Accepted Answer

A) mitosis 
B) binary fission 
C) budding 
D) meiosis 
A) mitosis 
B) binary fission 
C) budding 
D) meiosis

Question 11

What is a potential benefit of testing indoor and outdoor sites as well as sites with heavy flooding and light flooding?

Accepted Answer

A) There is no benefit associated with testing in multiple sites. 
B) Testing multiple sites takes less time and requires less equipment. 
C) Testing multiple sites allows for fewer scientists to be exposed to the air endotoxins. 
D) The data collected would allow scientists to compare endotoxin levels under multiple conditions. 
A) There is no benefit associated with testing in multiple sites. 
B) Testing multiple sites takes less time and requires less equipment. 
C) Testing multiple sites allows for fewer scientists to be exposed to the air endotoxins. 
D) The data collected would allow scientists to compare endotoxin levels under multiple conditions.

Question 12

According to the theory of endosymbiosis,which organelles evolved from small prokaryotes that established residence within other,larger prokaryotes?

Accepted Answer

A) vacuoles and lysosomes 
B) Golgi apparatus and endoplasmic reticulum 
C) centrioles and ribosomes 
D) mitochondria and chloroplasts 
A) vacuoles and lysosomes 
B) Golgi apparatus and endoplasmic reticulum 
C) centrioles and ribosomes 
D) mitochondria and chloroplasts

Question 13

Which of the following is a plausible reason for why it may be difficult to treat infections that arise from tooth decay?

Accepted Answer

A) Biofilm bacteria that cause tooth decay begin to produce endospores as a means to deter effects of antibiotics. 
B) Binary fission in biofilm bacteria that cause tooth decay begins to decrease as the biofilm community becomes more complex,thereby producing fewer bacterial cells for antibiotics to penetrate. 
C) As the biofilm that causes tooth decay becomes larger,its structure makes it difficult for antibiotics to break through bacterial cell walls. 
D) Bacteria of the biofilm that cause tooth decay form a symbiotic relationship with the antibiotics and therefore diminish antibiotic effectiveness. 
A) Biofilm bacteria that cause tooth decay begin to produce endospores as a means to deter effects of antibiotics. 
B) Binary fission in biofilm bacteria that cause tooth decay begins to decrease as the biofilm community becomes more complex,thereby producing fewer bacterial cells for antibiotics to penetrate. 
C) As the biofilm that causes tooth decay becomes larger,its structure makes it difficult for antibiotics to break through bacterial cell walls. 
D) Bacteria of the biofilm that cause tooth decay form a symbiotic relationship with the antibiotics and therefore diminish antibiotic effectiveness.

Question 14

In the image above,the aquatic organism moves using flagella.It is parasitic and can colonate and reproduce in the human intestine.What type of organism could this be?

Accepted Answer

A) a protozoan 
B) a slime mold 
C) phytoplankton 
D) seaweed 
A) a protozoan 
B) a slime mold 
C) phytoplankton 
D) seaweed

Question 15

Spherical bacteria that occur in clusters are ________.

Accepted Answer

A) streptococci 
B) bacilli 
C) spirochetes 
D) staphylococci 
A) streptococci 
B) bacilli 
C) spirochetes 
D) staphylococci

Question 16

What is a logical conclusion to draw from this study?

Accepted Answer

A) Workers that come to these areas to help rebuild do not need to be concerned with indoor air endotoxin levels. 
B) Workers that come to these areas where there was flooding damage should be advised to wear protective respiratory gear. 
C) Workers that come to these areas to help rebuild do not need to be concerned with outdoor air endotoxin levels. 
D) Workers that come to these areas to help rebuild buildings can assume that they will develop an irreversible lung infection. 
A) Workers that come to these areas to help rebuild do not need to be concerned with indoor air endotoxin levels. 
B) Workers that come to these areas where there was flooding damage should be advised to wear protective respiratory gear. 
C) Workers that come to these areas to help rebuild do not need to be concerned with outdoor air endotoxin levels. 
D) Workers that come to these areas to help rebuild buildings can assume that they will develop an irreversible lung infection.

Question 17

Which of the following is a colonial form of green algae?

Accepted Answer

A) Volvox 
B) Giardia 
C) Paramecium 
D) Plasmodium 
A) Volvox 
B) Giardia 
C) Paramecium 
D) Plasmodium

Question 18

The first organisms to colonize land were

Accepted Answer

A) plants,protists,and insects 
B) plants,fungi,and insects 
C) bacteria,plants,and fungi 
D) protists,bacteria,and fungi 
A) plants,protists,and insects 
B) plants,fungi,and insects 
C) bacteria,plants,and fungi 
D) protists,bacteria,and fungi

Question 19

________ include cells that can function either independently or as a single unit.

Accepted Answer

A) Dinoflagellates 
B) Forams 
C) Seaweeds 
D) Cellular slime molds 
A) Dinoflagellates 
B) Forams 
C) Seaweeds 
D) Cellular slime molds

Question 20

What kind of prokaryotes are these?

Accepted Answer

A) bacilli 
B) spirochetes 
C) cocci 
D) ciliates 
A) bacilli 
B) spirochetes 
C) cocci 
D) ciliates

Exam 15: The Evolution of Microbial Life

Plasmodium illustrate feeding characteristics of a(n)________.

What is an implication of the fact that tests were conducted after a period of dry weather?

If you were to view this organism with the right microscope you could see that the entire stalk is covered with smaller hairs than the ones on the opening.What might be the function of these smaller hairs on the stalk?

What accounts for the similarity between seaweeds and plants?

You discover a unicellular organism that moves by what appear to be pseudopodia.You conclude that this organism is ________.

Which of the following prokaryotes aid digestion in cattle,deer,and other animals that obtain nutrition from cellulose?

Eukaryotes arose about ________ years after the first prokaryotes.

What was the first stage of the process that led to the abiotic origin of life?

RNAs that can act as enzymes are called ________.

Prokaryotes reproduce by means of ________.

What is a potential benefit of testing indoor and outdoor sites as well as sites with heavy flooding and light flooding?

According to the theory of endosymbiosis,which organelles evolved from small prokaryotes that established residence within other,larger prokaryotes?

Which of the following is a plausible reason for why it may be difficult to treat infections that arise from tooth decay?

In the image above,the aquatic organism moves using flagella.It is parasitic and can colonate and reproduce in the human intestine.What type of organism could this be?

Spherical bacteria that occur in clusters are ________.

What is a logical conclusion to draw from this study?

Which of the following is a colonial form of green algae?

The first organisms to colonize land were

________ include cells that can function either independently or as a single unit.

What kind of prokaryotes are these?

Introduction: Biology Today

Essential Chemistry for Biology

The Molecules of Life

A Tour of the Cell

The Working Cell

Cellular Respiration: Obtaining Energy From Food

Photosynthesis: Using Light to Make Food

Cellular Reproduction: Cells From Cells

Patterns of Inheritance

The Structure and Function of Dna

How Genes Are Controlled

DNA Technology

How Populations Evolve

How Biological Diversity Evolves

The Evolution of Plants and Fungi

The Evolution of Animals

An Introduction to Ecology and the Biosphere

Population Ecology

Communities and Ecosystems

Unifying Concepts of Animal Structure and Function

Nutrition and Digestion

Circulation and Respiration

The Bodys Defenses

Hormones

Reproduction and Development

Nervous,Sensory,and Locomotor Systems

The Life of a Flowering Plant

The Working Plant

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