BIOS 242 Week 1 New Exam With Accurate Answers
100% Verified
Antoni van Leeuwenhoek - ANSWER father of microbiology
Antoni van Leeuwenhoek - ANSWER he began making and using simple microscopes,
and often made a new microscope for each specimen
bacteria, archaea, fungi, protozoa, algae, and small multicellular animals - ANSWER
Leeuwenhoek's microorganism classifications
bacteria and archaea - ANSWER unicellular and lack nuclei, much smaller than
eukaryotes, found everywhere there is sufficient moisture, reproduce asexually
bacteria - ANSWER peptidoglycan
fungi - ANSWER eukaryotic (have membrane-bound nucleus), obtain food from other
organisms, and possess cell walls
two categories of fungi - ANSWER molds and yeasts
molds - ANSWER multicellular; grow a long filaments; reproduce by sexual and asexual
spores
yeasts - ANSWER unicellular; reproduce asexually by budding; some produce sexual
spores
protozoa single celled eukaryotes, similar to animals in nutrient needs and cellular
, structures, live freely in water, asexual, most are capable of locomotion
pseudopods cell extensions that flow in direction of travel
cilia numerous short protrusions that propel organisms through its environment
flagella extensions of a cell that are fewer, longer, and more whiplike than cilia
algae - ANSWER can be unicellular or multicellular, photosynthetic, simple reproductive
structures, and categorized based on pigmentation and composition of cell wall
Aristotle - ANSWER who first proposed spontaneous generation
spontaneous generation - ANSWER living things can arise from nonliving matter
Redi's experiments - ANSWER -When decaying meat was kept isolated from flies,
maggots never developed
-Meat exposed to flies was soon infested
-As a result, scientists began to doubt Aristotle's theory
Needham's experiments - ANSWER -Scientists agreed that large animals could not arise
spontaneously, but believed microbes could.
-Needham's experiments with beef gravy and infusions of plant material reinforced this
idea
Figured the microbes needed food to eat in order to grow - ANSWER Why did Needham
use plant material?
Spallanzani's Experiments - ANSWER -Contradicted Needham
Concluded that: Needham failed to heat vials sufficiently enough to kill all microbes,
microbes can exist in air (thus contaminating)
100% Verified
Antoni van Leeuwenhoek - ANSWER father of microbiology
Antoni van Leeuwenhoek - ANSWER he began making and using simple microscopes,
and often made a new microscope for each specimen
bacteria, archaea, fungi, protozoa, algae, and small multicellular animals - ANSWER
Leeuwenhoek's microorganism classifications
bacteria and archaea - ANSWER unicellular and lack nuclei, much smaller than
eukaryotes, found everywhere there is sufficient moisture, reproduce asexually
bacteria - ANSWER peptidoglycan
fungi - ANSWER eukaryotic (have membrane-bound nucleus), obtain food from other
organisms, and possess cell walls
two categories of fungi - ANSWER molds and yeasts
molds - ANSWER multicellular; grow a long filaments; reproduce by sexual and asexual
spores
yeasts - ANSWER unicellular; reproduce asexually by budding; some produce sexual
spores
protozoa single celled eukaryotes, similar to animals in nutrient needs and cellular
, structures, live freely in water, asexual, most are capable of locomotion
pseudopods cell extensions that flow in direction of travel
cilia numerous short protrusions that propel organisms through its environment
flagella extensions of a cell that are fewer, longer, and more whiplike than cilia
algae - ANSWER can be unicellular or multicellular, photosynthetic, simple reproductive
structures, and categorized based on pigmentation and composition of cell wall
Aristotle - ANSWER who first proposed spontaneous generation
spontaneous generation - ANSWER living things can arise from nonliving matter
Redi's experiments - ANSWER -When decaying meat was kept isolated from flies,
maggots never developed
-Meat exposed to flies was soon infested
-As a result, scientists began to doubt Aristotle's theory
Needham's experiments - ANSWER -Scientists agreed that large animals could not arise
spontaneously, but believed microbes could.
-Needham's experiments with beef gravy and infusions of plant material reinforced this
idea
Figured the microbes needed food to eat in order to grow - ANSWER Why did Needham
use plant material?
Spallanzani's Experiments - ANSWER -Contradicted Needham
Concluded that: Needham failed to heat vials sufficiently enough to kill all microbes,
microbes can exist in air (thus contaminating)
