Microorganisms In Disease 2.5 Flashcards
Which of the following statements best defines micro-organisms?
AThey cause human disease.
B They lack a cell nucleus.
C They are infectious particles.
D They are too small to be seen with the unaided eye.
D They are too small to be seen with the unaided eye.
Which of the following are harmful micro-organisms called?
A Bacteria
B Symbionts
C Pathogens
D Fungi
Pathogens
A scientist discovers a new microbial species. It is a single-celled eukaryote without cell walls. To which of the following groups does it likely belong?
A Bacteria
B protista
C Fungí
D animalia
Protista
Which of the following types of microscopes allows you to see brightly illuminated specimens against a black background?
A Bright-field
B Dark-field
C Phase-contrast
D Electron
Dark field
Which of the following are common avenues for microbes to enter the human body? (Select all that apply.)
A Through the respiratory tract
B Through intact skin
C Through the gastrointestinal tract
D Through the urogenital tract
A Through the respiratory tract
C Through the gastrointestinal tract
D Through the urogenital tract
Which of the following are benefits of microbes? (Select all that apply.)
A Microbes break down molecules in order to release needed nutients.
B Microbes live within higher organisms that exist within the ecosystem.
C Microbes help scientists create vaccines.
D Microbes obtain their nutrients from their host.
E Microbes need a vector in order to spread.
A Microbes break down molecules in order to release needed nutrients.
B Microbes live within higher organisms that exist within the ecosystem.
C Microbes help scientists create vaccines.
Match the following groups of micro-organisms with the correct description.
Bacteria
Fungi
Helminths
Protozoa
Virus
Bacteria Single celled prokaryotes
Fungi Molds and yeast
Helminths Multicellular eukaryotic organism like parasitic worms
Protozoa unicellular eukaryotes often described as animal like
Virus Minutes no living. Particles the parasites cells
Which of the following magnifies a specimen to produce a real image of the specimen?
ACondenser
B Objective lens
C Ocular lens
D Body
Objective lens
Which of the following micro-organisms lack a nucleus?
A Pathogens
B Eukaryotes
C Prokaryotes
D Fermenters
Prokaryotes
Which of the following statements is correct?
A Non-infectious diseases are caused by pathogens.
B A pandemic is confined to a particular country or region.
C Vectors are required for the direct spread of microbes.
D An epidemic is a disease that affects a large number of people within a population.
D An epidemic is a disease that affects a large number of people within a population.
- What term is used to describe all disease-causing micro-organisms?
A. Decompose
B. Prokaryote
C. Pathogen
D. Eukaryotes
Pathogen
- Which if the following is at the core of every virus particle?
A DNA or RNA
B. Enzymes
C. DNA and RNA
DNA or RNA
- Which microscope achieves the greatest resolution and highest magnification?
A. Bright-field
B. Dark-field
C. Fluorescence
Electron
Electron
- Which of the following are considered microorganisms?
(Select all that apply.)
Mosquitoes
Protozoa
Bacteria
Fungi
Protozoa
Bacteria
Fungí
