Microbiology Homework: Chapter 1

Fungal Infections are studied by

a) herpetologists

b) mycologists

c) virologists

d) parasitologists

e) bacteriologists

Mycologists

Classification of organisms into three domains is based on

a) cellular organization

b) the presence of a cell wall

c) the number of cells in the organism

d) nutritional requirements

e) cellular proteins

cellular organization

Regarding Louis Pasteur's experiments with the S-neck flask, which of the following statements is TRUE?

a) all preexisting microorganisms were killed

b) air exchange was involved

c) a food source was provided

d) all of the answer choices are correct

e) the possibility of contamination was removed

all of the answer choices are correct

Semmelweis advocated hand washing as a method of preventing which of the following diseases?

a) puerperal fever

b) syphilis

c) anthrax

d) smallpox

e) cholera

puerperal fever

Which of the following is not a characteristic of viruses?

a) they are acellular

b) they are composed of genetic material and protein

c) they are visible with a light microscope

d) they are typically smaller than prokaryotic cells

e) they are obligatory parasites

they are visible with a light microscope

Which of the following statements about fungi is false?

a) yeasts are unicellular

b) molds are multicellular

c) fungi have a cell wall

d) fungi are eukaryotes

e) fungi are photosynthetic

fungi are photosynthetic

The use of phenol (carbolic acid) as a wound disinfectant was first practiced by

a) Holmes

b) Koch

c) Pasteur

d) Lister

e)Semmelweis

Lister

The first step for directly linking a microbe to a specific disease according to Koch's postulates is to

a) inject a sample of blood or other body fluid from a diseased animal into a healthy animal

b) compare the blood of a sick animal to blood obtained from a healthy animal

c) obtain a sample of blood or other blood or other body fluid from a diseased animal

d) isolate microbes from the blood of healthy animals

e) culture the blood or other body fluid from a diseased animal using nutrient medium

obtain a sample of blood or other blood or other body fluid from a diseased animal

Normal microbiota are typically found in and on all the following body locations except the

a) upper respiratory system

b) blood

c) colon

d) skin

e) mouth

Blood

In which of the following situations would Koch's postulates be utilized ?

a) determination of the cause of a new emerging disease by scientists studying disease transmition

b) development of a new antibiotic in a pharmaceutical lab

c) formulation of a vaccine against a new pathogen in a genetic engineering sub

d) whenever the scientific method is used to investigate a microbiolical problem

e)determination of the cause of cancer in a patient

determination of the cause of a new emerging disease by scientists studying disease transmition

which of the following is an incorrect pairing?

A) Protozoa; multicellular

b) Viruses; acellular paracites

c) algae; aquatic and marine habitats

d) fungi; cell walls

e) prokaryotes; no nuclei

Protozoa; multicellular

which of the following is not associated with viruses ?

a) chemical reactions

b) protein coat

c) nucleic acid

d) envelope

e) organelles

organelles

Which of the following types of microbe was not observed by Leeuwenhoek?

a) alga

b) prokaryote

c) virus

d) fungus

e) protozoan

virus

which of the following findings was essential for Edward Jenner vaccination process?

a) someone who recovers from a disease will not acquire that disease again

b) exposure to a milder disease form may produce immunity

c) a weakened microorganism will not cause disease

d) disease is cause by viruses

e) pathogenic microorganisms infect all humans and animals in the same matter

exposure to a milder disease form may produce immunity

The hypothesis that cowpox could provide Protection against smallpox was tested by - and provided the basis for the first vaccine

a) lazzaro spallanzani

b) Edward Jenner

c) Robert Koch

d) Eduard Buchner

e) Louis pasteur

Edward Jenner

which of the following areas of the investigation is considered a major driver of modern microbiology ?

a) genetics

b) industrial microbiology

c) the etiology of infectious disease

d) microbial classification

e) food preparation

genetics

Parasitic worm, even meters- long tapeworms, are studied in microbiology because

a) diagnosis usually involves microscopic examination of patient samples

b) they are parasites

c) Leeuwenhoek first discovered them

d) no one else wants to study them

e) the gram stain can be used to identify them

diagnosis usually involves microscopic examination of patient samples

what was the first disease shown to be bacterial in origin?

a) anthrax

b) malaria

c) tuberculosis

d) yellow fever

e) cholera

anthrax

Protozoan mobility structures include

a) flagella

b) cilia and pseudopods only

c) pseudopods

d) cilia

e) cilia, flagella, and pseudopods

cilia, flagella, and pseudopods

Which of the following scientists provided evidence in favor of the concept of spontaneous generation

a) needham

b) pasteur

c) redi

d) Buchner

e) spallanzani

needham