BACTERIAL CELL STRUCTURE – MB QUESTIONS AND
ANSWERS #19
3 domains of life - correct answer Bacteria, Archaea, Eukarya
Characteristics of bacteria - correct answer -Prokaryotic
-Single-celled
-peptidoglycan in cell wall
-no mem. Bound organelles
-haploid
Typical bacteria shape - correct answer rods, sphere, spiral
Bacteria cell wall - correct answer ridged, contains peptidoglycan
Bacteria replication - correct answer binary fission
Bacterial energy sources - correct answer uses chemicals or photosynthesize (purple
bacteria)
What environments can bacteria be found - correct answer All environments
Bacterial DNA is - correct answer circular
Where is electron transport in bacteria - correct answer cell membrane
Bacteria mobility structure - correct answer Flagella
Bacterial ribosomes - correct answer 70s
50s + 30s
Eucarya Characteristics - correct answer -Larger than bacteria
-Has nuc. Memb.
-Has meme. Bound organelles
What environments can eucarya be found - correct answer Non extreme environments
Eucarya ribosomes - correct answer 80s
60s + 40s
Eucarya DNA shape - correct answer linear
Where is electron transport in eucarya - correct answer Mitochondrial membrane
Eucarya replicate by - correct answer mitosis
, Eukaryotic microbes - correct answer fungi, protozoa, helminths
Fungi size - correct answer micro or macroscopic
Single celled fungi - correct answer yeast
Multicellular fungi - correct answer molds and mushrooms
Protozoa - correct answer - single-celled but complex
-larger than prokaryotes
Protozoa size - correct answer microscopic
Helminths - correct answer -parasitic worms
-multicellular
Helminths size - correct answer macroscopic but eggs/larvae microscopic
Eukaryotic DNA is - correct answer wrapped around histones
Eukaryotic motility structures - correct answer flagella and cilia
Acellular microbes - correct answer - not technically microorganisms because NOT alive
- term "microbe" still applies
- viruses
- prions
Virus structure - correct answer DNA or RNA molecule with a protein coat for protection,
the shape is created by its protein coat
Some enclosed by lipid envelope
Viruses activity - correct answer multiply by using host proteins, nutrients
Viruses are - correct answer obligate intracellular orgs.
Obligate intracellular organisms - correct answer Replicate only within cells, where they
are protected from many components of the host's protective responses such as
antibodies
Extracellular bacterium - correct answer -Replicate outside of cell
-Use the nutrients present in tissue fluids, or, occasionally, by feeding directly on host
cells
Facultative intracellular orgs - correct answer -use nutrients available in the cell itself
-can replicate inside or outside cells
ANSWERS #19
3 domains of life - correct answer Bacteria, Archaea, Eukarya
Characteristics of bacteria - correct answer -Prokaryotic
-Single-celled
-peptidoglycan in cell wall
-no mem. Bound organelles
-haploid
Typical bacteria shape - correct answer rods, sphere, spiral
Bacteria cell wall - correct answer ridged, contains peptidoglycan
Bacteria replication - correct answer binary fission
Bacterial energy sources - correct answer uses chemicals or photosynthesize (purple
bacteria)
What environments can bacteria be found - correct answer All environments
Bacterial DNA is - correct answer circular
Where is electron transport in bacteria - correct answer cell membrane
Bacteria mobility structure - correct answer Flagella
Bacterial ribosomes - correct answer 70s
50s + 30s
Eucarya Characteristics - correct answer -Larger than bacteria
-Has nuc. Memb.
-Has meme. Bound organelles
What environments can eucarya be found - correct answer Non extreme environments
Eucarya ribosomes - correct answer 80s
60s + 40s
Eucarya DNA shape - correct answer linear
Where is electron transport in eucarya - correct answer Mitochondrial membrane
Eucarya replicate by - correct answer mitosis
, Eukaryotic microbes - correct answer fungi, protozoa, helminths
Fungi size - correct answer micro or macroscopic
Single celled fungi - correct answer yeast
Multicellular fungi - correct answer molds and mushrooms
Protozoa - correct answer - single-celled but complex
-larger than prokaryotes
Protozoa size - correct answer microscopic
Helminths - correct answer -parasitic worms
-multicellular
Helminths size - correct answer macroscopic but eggs/larvae microscopic
Eukaryotic DNA is - correct answer wrapped around histones
Eukaryotic motility structures - correct answer flagella and cilia
Acellular microbes - correct answer - not technically microorganisms because NOT alive
- term "microbe" still applies
- viruses
- prions
Virus structure - correct answer DNA or RNA molecule with a protein coat for protection,
the shape is created by its protein coat
Some enclosed by lipid envelope
Viruses activity - correct answer multiply by using host proteins, nutrients
Viruses are - correct answer obligate intracellular orgs.
Obligate intracellular organisms - correct answer Replicate only within cells, where they
are protected from many components of the host's protective responses such as
antibodies
Extracellular bacterium - correct answer -Replicate outside of cell
-Use the nutrients present in tissue fluids, or, occasionally, by feeding directly on host
cells
Facultative intracellular orgs - correct answer -use nutrients available in the cell itself
-can replicate inside or outside cells
