Question 1

Certain bacteria are the only organisms that are capable of fixing atmospheric

Accepted Answer

A) carbon dioxide. 
B) oxygen. 
C) hydrogen. 
D) carbon. 
E) nitrogen. 
A) carbon dioxide. 
B) oxygen. 
C) hydrogen. 
D) carbon. 
E) nitrogen. E

Question 2

Which of the following statements about transformation is false?

Accepted Answer

A) The bacterium E coli is incapable of natural transformation. 
B) Like transduction and conjugation,natural transformation is an "accident" of plasmid biology. 
C) Artificial transformation is essential to many recombinant DNA techniques. 
D) All R-plasmids contain antibiotic-resistance genes. 
E) Natural transformation of the Enterobacteraceae is a significant public health risk. 
A) The bacterium E coli is incapable of natural transformation. 
B) Like transduction and conjugation,natural transformation is an "accident" of plasmid biology. 
C) Artificial transformation is essential to many recombinant DNA techniques. 
D) All R-plasmids contain antibiotic-resistance genes. 
E) Natural transformation of the Enterobacteraceae is a significant public health risk. B

Question 3

In which of the following characteristics,prokaryotes and eukaryotes are similar?

Accepted Answer

A) cell division 
B) internal compartmentalization 
C) flagella 
D) contain ribosomes 
E) enzymes localized in the plasma membrane 
A) cell division 
B) internal compartmentalization 
C) flagella 
D) contain ribosomes 
E) enzymes localized in the plasma membrane D

Question 4

Some prokaryotes attach to other substrates by hairlike outgrowths,which are shorter than flagella.These are called

Accepted Answer

A) endospores. 
B) flagellin. 
C) pili. 
D) plasmids. 
E) fission products. 
A) endospores. 
B) flagellin. 
C) pili. 
D) plasmids. 
E) fission products.

Question 5

Prokaryotes reproduce rapidly and this allows genetic variation to spread quickly through a population.Two processes can create new variations in prokaryotic populations.Select the choice with those two processes.

Accepted Answer

A) mutation and phage viral attack 
B) phage viral attack and genetic recombination 
C) genetic recombination and nondisjunction 
D) genetic recombination and mutation 
E) genetic recombination and rapid cell division 
A) mutation and phage viral attack 
B) phage viral attack and genetic recombination 
C) genetic recombination and nondisjunction 
D) genetic recombination and mutation 
E) genetic recombination and rapid cell division

Question 6

Four of the five statements listed below are characteristics of most prokaryotic organisms.Select the exception.

Accepted Answer

A) Prokaryotic cell diameters are one micrometer or less. 
B) Prokaryotic organisms are unicellular. 
C) Prokaryotic organisms use mitosis for their nuclear division. 
D) Prokaryotic organisms have a cell wall. 
E) Prokaryotic organisms do not have a membrane around their hereditary materials. 
A) Prokaryotic cell diameters are one micrometer or less. 
B) Prokaryotic organisms are unicellular. 
C) Prokaryotic organisms use mitosis for their nuclear division. 
D) Prokaryotic organisms have a cell wall. 
E) Prokaryotic organisms do not have a membrane around their hereditary materials.

Question 7

Prokaryotes undergo a process that produces cells that are identical.This process is called

Accepted Answer

A) mitosis. 
B) meiosis. 
C) conjugation. 
D) binary fission. 
E) syngamy. 
A) mitosis. 
B) meiosis. 
C) conjugation. 
D) binary fission. 
E) syngamy.

Question 8

Which of the following statements about Hfr cells and bacterial conjugation is false?

Accepted Answer

A) An Hfr cell becomes an F- cell if its integrated F plasmid is excised. 
B) If excision of the F plasmid from an Hfr cell includes some bacterial genes,a partial diploid can result. 
C) The genes that are transferred from an Hfr cell into a recipient cell during conjugation replace the equivalent genes in the recipient cell. 
D) An F' plasmid contains some bacterial genes. 
E) Cells with integrated F' plasmid have two copies of some genes. 
A) An Hfr cell becomes an F- cell if its integrated F plasmid is excised. 
B) If excision of the F plasmid from an Hfr cell includes some bacterial genes,a partial diploid can result. 
C) The genes that are transferred from an Hfr cell into a recipient cell during conjugation replace the equivalent genes in the recipient cell. 
D) An F' plasmid contains some bacterial genes. 
E) Cells with integrated F' plasmid have two copies of some genes.

Question 9

Carbon fixation carried out by the prokaryotes known as the __________ involves chlorophyll a.

Accepted Answer

The answer of Carbon fixation carried out by the prokaryotes...

Question 10

Which of the following statements about specialized transduction is false?

Accepted Answer

A) Specialized transduction always requires phage with a lysogenic life cycle. 
B) The integrated phage is called a prophage. 
C) Genes for excision and initiation of lysis are in the prophage. 
D) Prophage can include bacterial genes. 
E) Specialized transduction never produces cells that are partial diploids. 
A) Specialized transduction always requires phage with a lysogenic life cycle. 
B) The integrated phage is called a prophage. 
C) Genes for excision and initiation of lysis are in the prophage. 
D) Prophage can include bacterial genes. 
E) Specialized transduction never produces cells that are partial diploids.

Question 11

The bacterium E coli has about 5000 genes.Assume a mutation rate of 1 in every one million genes.If you start with one bacterium that divides to produce two bacteria every 20 minutes,how many mutant E coli will there be after 10 hours?

Accepted Answer

A) 900 
B) 1.1 X 103 
C) 5.4 X 106 
D) 1.1 X 109 
E) 2.1 X 1011 
A) 900 
B) 1.1 X 103 
C) 5.4 X 106 
D) 1.1 X 109 
E) 2.1 X 1011

Question 12

The enzymes for cellular respiration in eukaryotic organisms are located within the mitochondria.In prokaryotic organisms,these enzymes are attached to the

Accepted Answer

A) cell wall. 
B) cell membrane. 
C) ribosomes. 
D) circular DNA. 
E) nuclear membranE. 
A) cell wall. 
B) cell membrane. 
C) ribosomes. 
D) circular DNA. 
E) nuclear membranE.

Question 13

All of the following are ways that prokaryotes can exchange genetic material except

Accepted Answer

A) vertical gene transfer. 
B) conjugation. 
C) transduction. 
D) transformation. 
E) exchange of R plasmids. 
A) vertical gene transfer. 
B) conjugation. 
C) transduction. 
D) transformation. 
E) exchange of R plasmids.

Question 14

You expose a tube of bacteria to ultraviolet radiation to induce mutations.You then spread the bacteria on a plate containing media with all know required nutrients and wait until separate colonies form.Finally,you use replicate plating to transfer a print of this plate to an additional sterile plate containing minimal media plus a known required nutrient for the bacteria.Based on this protocol,colonies growing on the plate lacking a required nutrient would include what type of cells?

Accepted Answer

A) only wild-type bacteria 
B) only bacteria mutant for the supplied nutrient 
C) only mutant bacteria but not those mutant for the supplied nutrient 
D) wild-type bacteria and bacteria mutant for the supplied nutrient 
E) wild-type bacteria and all mutant bacteria except those mutant for the supplied nutrient 
A) only wild-type bacteria 
B) only bacteria mutant for the supplied nutrient 
C) only mutant bacteria but not those mutant for the supplied nutrient 
D) wild-type bacteria and bacteria mutant for the supplied nutrient 
E) wild-type bacteria and all mutant bacteria except those mutant for the supplied nutrient

Question 15

Which of the following statements about Hfr cells and bacterial conjugation is false?

Accepted Answer

A) Insertion sequences (IS)are present in both the F plasmid and the bacterial chromosome. 
B) IS elements are transposable elements. 
C) Insertion of the F plasmid into the bacterial chromosome to produce an Hfr cell causes the loss of an equivalent portion of the chromosome. 
D) Hfr cells can transfer the whole chromosome in about 90 minutes. 
E) The number of bacterial genes that are transferred into the recipient cell depends on how long the conjugation bridge is maintained. 
A) Insertion sequences (IS)are present in both the F plasmid and the bacterial chromosome. 
B) IS elements are transposable elements. 
C) Insertion of the F plasmid into the bacterial chromosome to produce an Hfr cell causes the loss of an equivalent portion of the chromosome. 
D) Hfr cells can transfer the whole chromosome in about 90 minutes. 
E) The number of bacterial genes that are transferred into the recipient cell depends on how long the conjugation bridge is maintained.

Question 16

Bacterial ribosomes differ from eukaryotic ribosomes in all of the following except

Accepted Answer

A) they act as sites of protein synthesis. 
B) they are smaller than in eukaryotes. 
C) tetracycline and chloramphenicol can bind to bacterial ribosomes. 
D) they differ in ribosomal proteins. 
E) they differ in RNA content. 
A) they act as sites of protein synthesis. 
B) they are smaller than in eukaryotes. 
C) tetracycline and chloramphenicol can bind to bacterial ribosomes. 
D) they differ in ribosomal proteins. 
E) they differ in RNA content.

Question 17

Various techniques have been developed to isolate strains of bacteria carrying a particular mutation.In one,bacteria containing wild-type cells and cells of a desired mutant are grown on a medium lacking the nutrient for which the desired mutants are auxotrophic but containing the an antibiotic that only kills growing cells.In this environment,

Accepted Answer

A) both wild-type and mutant cells are killed. 
B) both wild-type and mutant cells survive. 
C) wild-type cells survive;mutant cells die. 
D) wild-type cells die;mutant cells survive. 
E) only double mutants survivE. 
A) both wild-type and mutant cells are killed. 
B) both wild-type and mutant cells survive. 
C) wild-type cells survive;mutant cells die. 
D) wild-type cells die;mutant cells survive. 
E) only double mutants survivE.

Question 18

A bacterium is found that can photosynthesize in the presence of light but uses hydrogen sulfide and releases elemental sulfur as a bi-product.This organism can best be classified as a

Accepted Answer

A) chemoautotroph. 
B) chemoheterotroph. 
C) photoautotroph. 
D) photoheterotroph. 
E) pathogen. 
A) chemoautotroph. 
B) chemoheterotroph. 
C) photoautotroph. 
D) photoheterotroph. 
E) pathogen.

Question 19

Choose letter of the best match from the following:
-Transfer of bacterial genes involving a prophage.

Accepted Answer

A) conjugation 
B) plasmid 
C) transduction (generalized) 
D) transduction (specialized) 
E) transformation (artificial)
F)transformation (natural) 
A) conjugation 
B) plasmid 
C) transduction (generalized) 
D) transduction (specialized) 
E) transformation (artificial)
F)transformation (natural)

Question 20

Choose letter of the best match from the following:
-Transfer of bacterial genes by a lytic phage.

Accepted Answer

A) conjugation 
B) plasmid 
C) transduction (generalized) 
D) transduction (specialized) 
E) transformation (artificial)
F)transformation (natural) 
A) conjugation 
B) plasmid 
C) transduction (generalized) 
D) transduction (specialized) 
E) transformation (artificial)
F)transformation (natural)

Exam 28: Prokaryotes

Certain bacteria are the only organisms that are capable of fixing atmospheric

Which of the following statements about transformation is false?

In which of the following characteristics,prokaryotes and eukaryotes are similar?

Some prokaryotes attach to other substrates by hairlike outgrowths,which are shorter than flagella.These are called

Prokaryotes reproduce rapidly and this allows genetic variation to spread quickly through a population.Two processes can create new variations in prokaryotic populations.Select the choice with those two processes.

Four of the five statements listed below are characteristics of most prokaryotic organisms.Select the exception.

Prokaryotes undergo a process that produces cells that are identical.This process is called

Which of the following statements about Hfr cells and bacterial conjugation is false?

Carbon fixation carried out by the prokaryotes known as the __________ involves chlorophyll a.

Which of the following statements about specialized transduction is false?

The bacterium E coli has about 5000 genes.Assume a mutation rate of 1 in every one million genes.If you start with one bacterium that divides to produce two bacteria every 20 minutes,how many mutant E coli will there be after 10 hours?

The enzymes for cellular respiration in eukaryotic organisms are located within the mitochondria.In prokaryotic organisms,these enzymes are attached to the

All of the following are ways that prokaryotes can exchange genetic material except

Which of the following statements about Hfr cells and bacterial conjugation is false?

Bacterial ribosomes differ from eukaryotic ribosomes in all of the following except

A bacterium is found that can photosynthesize in the presence of light but uses hydrogen sulfide and releases elemental sulfur as a bi-product.This organism can best be classified as a

Choose letter of the best match from the following: -Transfer of bacterial genes involving a prophage.

Choose letter of the best match from the following: -Transfer of bacterial genes by a lytic phage.

The Science of Biology

The Nature of Molecules

The Chemical Building Blocks of Life

Cell Structure

Membranes

Energy and Metabolism

How Cells Harvest Energy

Photosynthesis

Cell Communication

How Cells Divide

Sexual Reproduction and Meiosis

Patterns of Inheritance

Chromosomes Mapping and the Meiosis - Inheritance Connection

Dna: the Genetic Material

Genes and How They Work

Control of Gene Expression

Biotechnology

Genomics

Cellular Mechanisms of Development

Genes Within Populations

The Evidence for Evolution

The Origin of Species

Systematics and the Phylogenetic Revolution

Genome Evolution

Evolution of Development

The Tree of Life

Viruses

Protists

Overview of Green Plants

Fungi

Overview of Animal Diversity

Noncoelomate Invertebrates

Coelomate Invertebrates

Vertebrates

Plant Form

Vegetative Plant Development

Transport in Plants

Plant Nutrition and Soils

Plant Defense Responses

Sensory Systems in Plants

Plant Reproduction

The Animal Body and Principles of Regulation

The Nervous System

Sensory Systems

The Endocrine System

The Musculoskeletal System

The Digestive System

The Respiratory System

The Circulatory System

Osmotic Regulation and the Urinary System

The Immune System

The Reproductive System

Animal Development

Behavioral Biology

Population Ecology

Community of Ecology

Dynamics of Ecosystems

The Biosphere

Conservation Biology

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