Question 1

Bacterial ribosomes:

Accepted Answer

A) have a sedimentation rate of 70S 
B) are made up of 30S and 40S subunits 
C) have a sedimentation rate of 80S 
D) are made up of 50S and 30S subunits 
A) have a sedimentation rate of 70S 
B) are made up of 30S and 40S subunits 
C) have a sedimentation rate of 80S 
D) are made up of 50S and 30S subunits A

Question 2

Attachment pili do all of the following except,

Accepted Answer

A) help bacteria adhere to surfaces 
B) allow bacteria to form a pellicle at the air-water interface of a broth culture 
C) clump blood cells in a process called hemagglutination 
D) prevent the pathogenicity of certain bacteria 
A) help bacteria adhere to surfaces 
B) allow bacteria to form a pellicle at the air-water interface of a broth culture 
C) clump blood cells in a process called hemagglutination 
D) prevent the pathogenicity of certain bacteria D

Question 3

Lysozyme,found in human tears,controls the growth of bacteria by _____.

Accepted Answer

A) fusing with vacuoles 
B) containing multiple kinds of digestive enzymes 
C) digesting peptidoglycan 
D) preventing peptidoglycan synthesis 
A) fusing with vacuoles 
B) containing multiple kinds of digestive enzymes 
C) digesting peptidoglycan 
D) preventing peptidoglycan synthesis C

Question 4

Bacilli produce fewer arrangements than cocci because _____.

Accepted Answer

A) cocci are smaller than bacilli 
B) bacilli only reproduce asexually 
C) bacilli divide along several different planes while cocci divide along a single plane 
D) cocci divide along several different planes while bacilli divide along a single plane 
A) cocci are smaller than bacilli 
B) bacilli only reproduce asexually 
C) bacilli divide along several different planes while cocci divide along a single plane 
D) cocci divide along several different planes while bacilli divide along a single plane

Question 5

Mitochondria:

Accepted Answer

A) are responsible for converting sunlight to chemical energy 
B) are present only in photosynthetic organisms 
C) have a double membrane 
D) are responsible for protein synthesis 
A) are responsible for converting sunlight to chemical energy 
B) are present only in photosynthetic organisms 
C) have a double membrane 
D) are responsible for protein synthesis

Question 6

While division in one plane produces cells in pairs,what does random division produce?

Accepted Answer

A) Sarcinae 
B) Eight cells arranged in a cube 
C) Grapelike clusters (staphylo-) 
D) Four cells arranged in a cube 
A) Sarcinae 
B) Eight cells arranged in a cube 
C) Grapelike clusters (staphylo-) 
D) Four cells arranged in a cube

Question 7

Which of the following statements about the prokaryotic cells surface-to-volume ratio is false?

Accepted Answer

A) Because of their small size, bacteria have a small surface-to-volume ratio 
B) Eukaryotes have surface-to-volume ratio that is only 1/10 that of prokaryotes 
C) The prokaryotes surface-to-volume ratio means that nutrients can easily and quickly reach all parts of the cell as no internal part of the cell is very far from the surface. 
D) A bacteria with a surface area of about 12 microns squared and a volume of 4 cubic microns has a surface-to-volume ratio of 3:1 
A) Because of their small size, bacteria have a small surface-to-volume ratio 
B) Eukaryotes have surface-to-volume ratio that is only 1/10 that of prokaryotes 
C) The prokaryotes surface-to-volume ratio means that nutrients can easily and quickly reach all parts of the cell as no internal part of the cell is very far from the surface. 
D) A bacteria with a surface area of about 12 microns squared and a volume of 4 cubic microns has a surface-to-volume ratio of 3:1

Question 8

Which of the following statements about outer membranes is true?

Accepted Answer

A) It contains an endotoxin (lipopolysaccharide)which is responsible for fever and potentially serious complications in human infections. 
B) It prevents the cell from lysing when fluids flow into the cell. 
C) Treatment with antibiotics which kill the bacteria will reduce the concentration of endotoxin. 
D) It is a space that is very active in cell metabolism 
A) It contains an endotoxin (lipopolysaccharide)which is responsible for fever and potentially serious complications in human infections. 
B) It prevents the cell from lysing when fluids flow into the cell. 
C) Treatment with antibiotics which kill the bacteria will reduce the concentration of endotoxin. 
D) It is a space that is very active in cell metabolism

Question 9

The flagellar arrangement represented in this image is_____.

Accepted Answer

A) monotrichous 
B) peritrichous 
C) amphitrichous 
D) lophotrichous 
A) monotrichous 
B) peritrichous 
C) amphitrichous 
D) lophotrichous

Question 10

Which of these statements about eukaryotic cell division is false?

Accepted Answer

A) the nuclei of eukaryotic cells divide via the process of mitosis 
B) haploids are cells that receive only one chromosome from each pair of chromosomes 
C) a single round of mitosis results in the production of four haploid cells 
D) during mitosis the nuclear envelope breaks apart and the spindle apparatus forms 
A) the nuclei of eukaryotic cells divide via the process of mitosis 
B) haploids are cells that receive only one chromosome from each pair of chromosomes 
C) a single round of mitosis results in the production of four haploid cells 
D) during mitosis the nuclear envelope breaks apart and the spindle apparatus forms

Question 11

Which of the following structures is not normally part of a bacterial flagellum?

Accepted Answer

A) Hook 
B) Filament 
C) Basal body 
D) Anchor 
A) Hook 
B) Filament 
C) Basal body 
D) Anchor

Question 12

Give examples of microorganisms that are prokaryotes and eukaryotes. What microorganism does not fit in either category? Describe three differences between prokaryotes and eukaryotes.

Accepted Answer

Prokaryotes include bacteria.Eukaryotes

Question 13

The cytoskeleton consists of _____.

Accepted Answer

A) microfilaments and sterols 
B) microtubules and proteins 
C) microfilaments and microtubules 
D) sterols and proteins 
A) microfilaments and sterols 
B) microtubules and proteins 
C) microfilaments and microtubules 
D) sterols and proteins

Question 14

Which of the following groups of organisms is not prokaryotic?

Accepted Answer

A) Archaea 
B) Bacteria 
C) Eubacteria 
D) Eukarya 
A) Archaea 
B) Bacteria 
C) Eubacteria 
D) Eukarya

Question 15

Which of the following cellular structures are found only in prokaryotic cells?

Accepted Answer

A) endoplasmic reticulum 
B) pili 
C) nucleolus 
D) lysosomes 
A) endoplasmic reticulum 
B) pili 
C) nucleolus 
D) lysosomes

Question 16

Removal of the cell wall of a Gram positive bacteria results in the formation of a _____.

Accepted Answer

A) protoplast 
B) spheroplast 
C) periplast 
D) polyplast 
A) protoplast 
B) spheroplast 
C) periplast 
D) polyplast

Question 17

Which of the following statements about the endosymbiotic hypothesis is false?

Accepted Answer

A) Eukaryotic cells have both 70S and 80S ribosomes. 
B) Mitochondria have their own DNA. 
C) When removed from cells, mitochondria continue to grow and divide. 
D) Mitochondria are about the same size as prokaryotic cells. 
A) Eukaryotic cells have both 70S and 80S ribosomes. 
B) Mitochondria have their own DNA. 
C) When removed from cells, mitochondria continue to grow and divide. 
D) Mitochondria are about the same size as prokaryotic cells.

Question 18

The _____ portion of the cell membrane functions as a barrier while the ______ portion provides specific functions,including pumps,receptors,adhesion,etc.

Accepted Answer

A) carbohydrate; nucleic acid 
B) lipid; protein 
C) lipid; carbohydrate 
D) nucleic acid; lipid 
A) carbohydrate; nucleic acid 
B) lipid; protein 
C) lipid; carbohydrate 
D) nucleic acid; lipid

Question 19

The rough endoplasmic reticulum appears rough because of _____.

Accepted Answer

A) sterols in its membrane 
B) fats and sugars on its surface 
C) multiple ribosomes on its surface 
D) proteins in the lumen of the ER 
A) sterols in its membrane 
B) fats and sugars on its surface 
C) multiple ribosomes on its surface 
D) proteins in the lumen of the ER

Question 20

A small comma shaped bacteria is described as being a ________.

Accepted Answer

A) spirochete 
B) bacillus 
C) spirillum 
D) vibrio 
A) spirochete 
B) bacillus 
C) spirillum 
D) vibrio

Exam 4: Characteristics of Prokaryotic and Eukaryotic Cells

Bacterial ribosomes:

Attachment pili do all of the following except,

Lysozyme,found in human tears,controls the growth of bacteria by _____.

Bacilli produce fewer arrangements than cocci because _____.

Mitochondria:

While division in one plane produces cells in pairs,what does random division produce?

Which of the following statements about the prokaryotic cells surface-to-volume ratio is false?

Which of the following statements about outer membranes is true?

The flagellar arrangement represented in this image is_____.

Which of these statements about eukaryotic cell division is false?

Which of the following structures is not normally part of a bacterial flagellum?

Give examples of microorganisms that are prokaryotes and eukaryotes. What microorganism does not fit in either category? Describe three differences between prokaryotes and eukaryotes.

The cytoskeleton consists of _____.

Which of the following groups of organisms is not prokaryotic?

Which of the following cellular structures are found only in prokaryotic cells?

Removal of the cell wall of a Gram positive bacteria results in the formation of a _____.

Which of the following statements about the endosymbiotic hypothesis is false?

The _____ portion of the cell membrane functions as a barrier while the ______ portion provides specific functions,including pumps,receptors,adhesion,etc.

The rough endoplasmic reticulum appears rough because of _____.

A small comma shaped bacteria is described as being a ________.

Scope and History of Microbiology

Fundamentals of Chemistry

Microscopy and Staining

Essential Concepts of Metabolism

Growth and Culturing of Bacteria

Microbial Genetics

Gene Transfer and Genetic Engineering

An Introduction to Taxonomy: the Bacteria

Viruses

Eukaryotic Microorganisms and Parasites

Sterilization and Disinfection

Antimicrobial Therapy

Host-Microbe Relationships and Disease Processes

Epidemiology and Nosocomial Infections

Innate Host Defenses

Immunology I: Basic Principles of Adaptive Immunity and Immunization

Immunology Ii: Immunological Disorders and Tests

Diseases of the Skin and Eyes; Wounds and Bites

Urogenital and Sexually Transmitted Diseases

Diseases of the Respiratory System

Oral and Gastrointestinal Diseases

Cardiovascular, lymphatic and Systemic Disease

Diseases of the Nervous System

Environmental Microbiology

Applied Microbiology

Filters

The _ portion of the cell membrane functions as a barrier while the __ portion provides specific functions,including pumps,receptors,adhesion,etc.