NEW
Font size
WorksheetsPHBIO 2105 Chapter 2 Prokaryotic and Eukaryotic Cells
Total questions: 17
Worksheet time: 3mins
What are the features of Prokaryotes?
absence of nucleus, unicellular, with membrane bound cellular organelles
possess true nucleus, unicellular, without membrane bound cellular organelles
absence of nucleus, unicellular, without membrane bound cellular organelles
possess true nucleus, unicellular, with membrane bound cellular organelles
Round cells sometimes flattened when they are adjacent to one another
.Bacillus
Coccus
Spiral
Treponema pallidium is an example of what type of spiral bacteria
Vibrio
Spirillum
Spirochete
Example microorganism that has an arrangement of cocci in chains
Streptococcus pneumoniae
Staphylococcus aureus
Streptococcus pyogenes
True about Extracellular polymeric substance in glycocalyx
protect cells within, facilitates communication, enable cells to survive
prevent phagocytosis, possess adhesins, enable colonization
provide rigidity to the cell, prevents osmotic lysis, enable permeability to ions, AA, & sugars
Type of flagellar arrangement that has flagella projecting in all direction
lophotrichous
amphitrichous
peritrichous
Basic part of flagella that anchors flagellum into the cell wall and membrane
filament
flagellin
hook
basal body
Composition of peptidoglycan
N-acelyglutamine & N-acetylmurein
N-acetylglutamine & N-acetylmuramic acid
N-acetylglucosamine & N-acetylmurein
N-acetylglucosamine & N-acetylmuramic acid
True about mycoplasmas
They are weakly gram (+) that stain better with acid-fast stain
They gram (-) cell wall but too small to be seen with the light microscope
They are neither g (+) nor g (-), do not have a cell wall and has simple cell membrane
Which is not true about acid-fast cell walls?
Acid fast organisms resist decolorization with acid alcohol, holding fast to their red stain
Acid fast organisms are weakly gram (+) but stain better with acid fast stain
Mycoplasmas and Nocardia are example of acid fast organism
Which is not a cell wall synthesis inhibitor antibiotic?
Polymyxins
Penicillins
Cephalosporins
Bacitracin
He discovered lysozyme for medical antibiotic --> penicillins
Alexander Flamming
Alexander Fleming
Alexander Flaming
Drug of choice for MRSA (methicillin resistant staphylococcus aureus)
Penicillins
Cepholosporin
Bacitracin
Vancomycin
An organism that absorbs crystal violet and give blue color to the cell
Gram (+)
Gram (-)
Both A & B
Neither A & B
True about gram positive cell wall
It has thick layer of peptidoglycan, has a unique membrane and periplasmic space
It has thick layer of peptidoglycan, has important polysaccharides which is techoic acid
It has thin layer of peptidoglycan, has negatively charged techoic acid on surface
It has thin layer of peptidoglycan, has a unique membrane and periplasmic space
Which is not true about endotoxin?
it is only found in G(+) cell wall that produces toxins that causes bacterial cell lysis
It is difficult to treat with antibiotic because of the high amount of endotoxins during cell lysis
it can cause septic shock that triggers immune response lead to sepsis and shock
Which is not true about endospores?
They are formed by 2 genera of bacteria such as Bacillus and Clostridium
Spores formed when there is shortage of needed nutrients and can live dormant for years
They are eradicated to UV and radiation, cold, drying and chemical agents
