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BIO 235 EXAM 1 QUESTIONS AND ANSWERS

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BIO 235 EXAM 1 QUESTIONS AND ANSWERS

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BIO 235 EXAM 1 QUESTIONS AND ANSWERS
Robert Koch - Answers-Father of microbiology, identified germ causing TB

Louis Pasteur - Answers-discredited spontaneous generation, proposed Germ theory,
"Microorganisms are responsible for infectious diseases

Antoine von Leeuonhoek - Answers-created the first microscope; first to see
microbes/bacteria

Robert Hooke - Answers-coined the term "cell"

Spontaneous Generation Theory - Answers-the theory that living organisms can rise
from nonliving things

binomial nomenclature - Answers-Classification system in which each species is
assigned a two-part scientific name

3 domains of life - Answers-Bacteria, Archaea, Eukarya

bacteria - Answers-single-celled organisms that lack a nucleus; prokaryotes

Eukarya - Answers-eukaryotic organisms

Archea - Answers-prokaryotic organisms

Bacteriology - Answers-study of bacteria

coccus (cocci) - Answers-spherical/ round shaped bacteria

Sprillium - Answers-spiral shaped bacteria

Spirochetes - Answers-long, loose, helical spiral

Vibrio - Answers-curved rod

Yeasts - Answers-unicellular fungi

Mycology - Answers-study of fungi

Protozoology - Answers-study of protozoans

Parasitiology - Answers-study of parasites

Virology - Answers-study of viruses

, taxonomical unit - Answers-classifies groups of closely related individuals

Virus size range - Answers-10-1000 nm in diameter. Much smaller than bacteria.

eukaryotic cell size - Answers-10-100 micrometers

prokaryotic cell size - Answers-1-10 micrometers

Bacillus - Answers-Rod shaped bacteria


oral thrush - Answers-yeast infection that occurs in the mouth, mainly affects infants

Helminthic parasites - Answers-- macroscopic, multicellular eukaryotic worms
- complex life cycles (intermediate forms- immature, definitive hosts- adult, large release
of eggs)

contrast - Answers-increase contrast to detect different structures in a specimen.

brightfield microscopy - Answers-produces a darker image in a lighter background

dark field microscopy - Answers-increases contrast, brighter image on a darker
background

fluorescence microscopy - Answers-uses UV light, specimen may naturally fluoresce or
is stained with fluorescent dyes

phase contrast microscopy - Answers-uses refraction and interference to create high
contrast/ resolution images with staining

Magnification - Answers-ability to enlarge objects

Resolution - Answers-The ability to distinguish two objects from each other at a given
magnification

objective lens - Answers-The lens on a light microscope that is closest to the stage,
ocular lens is 10x

simple microscope - Answers-a microscope that contains only one lens

compound microscope - Answers-A light microscope that has more than one lens

acid fast stain - Answers-able to differentiate between two gram positive cells ,
carbolfuchsin used as primary stain

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