More Immunity & Microorganisms Flashcards
Why do we stain bacteria?
In order to determine what type of cell wall they have. Gram + is purple. Gram - is pink
What is a photoautotroph?
photo - light
auto - self
troph - to feed
What is a chemoautotroph?
uses chemicals to obtain energy
recyclers break down dead matter
true
Virus parts?
capsid - outer protein coat
nucleic acid
envelopes - only on complex viruses
Are viruses the same size and structure?
no
lytic cycle
attach enter replicate assemble release (lyse)
lysogenic cycle
attach and enter then sits in the host cell’s DNA
releasing toxins
a way some bacteria cause disease
AIDS is caused by a virus.
true
Why you run a fever when you have a bacterial infection.
It keeps bacterial infections under control
Do vaccines prevent prevent some viral infections?
yes
Do antibiotics work on viral infections?
no
Is cancer infectious?
no
your skin
most important nonspecific defense
vaccines give you protections by
triggering plasma cells to make antibodies
immune response is triggered by
antigens
mast cells release histamines
when exposed to allergens
an example of an autoimmune disease
multiple sclerosis
HIV attacks
helper T cells
are eubacterium and archaebacteria prokaryotes?
yes
malaria is caused by
Plasmodium
algae produce about 50% of Earth’s oxygen
true
do all fungi produce mushrooms?
no
mycelium
tangled mass of hyphae
basidia are found in the gills of mushrooms
true
do fungi feed on living things
true
cool fact: growth of yeasts (fungi) in moist regions of your body is kept in check by competition with
bacteria
