Symbiosis correct answers a situation in which two populations of organisms
interact in a close and long-term association
Synergism correct answers two populations live together and accomplish what neither could alone.
- mitochondria and chloroplasts in eukaryotic cells.
lichens: fungus and a...
MBI 405 Exam 1 || A Verified A+ Pass.
Symbiosis correct answers a situation in which two populations of organisms
interact in a close and long-term association
Synergism correct answers two populations live together and accomplish what neither could
alone.
- mitochondria and chloroplasts in eukaryotic cells.
lichens: fungus and algae (green algae or cyanobacteria)
Mutualism correct answers -benefits both organisms..gut microbiota in herbivores and termites
-Lactobacillus: in vagina nutrients and production of acid environment
-E. coli: in intestine supplies vitamin K and metabolizes otherwise indigestible foodstuffs
-Streptococcal spp.: in the throat provide "colonization resistance" to Streptococcus pyogenes.
-personal microbiota helps the immune system to mature
Commensalism correct answers - one population benefits,
the other neither benefits nor is harmed.
- bacteria that inhabit our inner and outer surfaces without harming us
- a benefit to host may be unrecognized
Antagonism correct answers beneficial to one organism, harmful to the other
i.e., pathogens
Colonization correct answers - bacterial attachment to and replication in/on a host
Infection correct answers colonization of a host that leads to damage
disease correct answers any deviation from health
symptoms correct answers Subjective characteristics of disease felt only by the patient
(pain/headaches)
Signs correct answers objective evidence of disease (rash, fever)
Syndrome correct answers a complex of signs and symptoms that define a disease
Normal microbiota (flora) correct answers - microorganisms that
colonize without causing disease
an example of symbiosis, either
mutualism or commensalism
- introduced in the birth canal and
gradually acquired from
environmental exposure
, Human cell vs Bacterial cell (concentration) correct answers 3.0 x 10^13 cells
3.9 x 10^ 13 bacteria
Skin bacterial concentration correct answers 10^3 to 10^4 per cm^2
Teeth bacterial concentration correct answers 10^11 per gm of plaque
Stomach bacterial concentration correct answers 10^3 to 10^4 per ml
Helicobacter pylori!!!
UGT bacterial concentration correct answers - Urethra - 10^2 (M) 10^6 (F) per gm
- Bladder - 10^4 per ml
Bacteria on the skin correct answers gram positive:
Staphylococcus
Micrococcus
Corynebacterium
Propionibacterium acnes
gram negative:
Enterics
Bacteria on the Oronasopharynx (ONP) correct answers Gram-positive:
alpha-hemolytic Strep
Corynebacterium
Micrococcus
Gram-Negative:
Bacteroides
Spirochaetes
Haemophilus
Neisseria
Mycoplasma
Bacteria in the Gastrointestinal tract correct answers Gram-positive:
Streptococcus
Enterococcus
Lactobacillus
Clostridium
Gram-negative:
Enterics
Bacteroides
Pseudomonas
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller FullyFocus. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.99. You're not tied to anything after your purchase.
