Virus and bacteria test Flashcards
(33 cards)
What cell does HIV attack that impairs the immune system
helper t cells
characteristic shared by virus and living cell
store genetic information in nucleic acids
viruses unlike bacteria
can reproduce only in living cells
major destructive result from infection from virus
destruction of cells by viral replication
what organism lives in many herbivore intestine and aids in the digestive process
bacteria
prokaryotes with a spherical shape
cocci
what makes the body produce immunity to disease
vaccines
examples of organisms that break down the nutrients in dead matter into simpler substances
bacteria and fungi
antibiotics work by blocking the growth and reproduction of
bacteria
what do decomposers improve the quality of
topsoil layer
what is used to produce drugs like insulin
bacteria
the algal bloom called red tide
produces toxins that can harm fish and humans
fungus that grows within the outer layers of human skin causes
ringworm and athletes foot
what is the effect of the symbiotic relationship of lichen
the algae and fungus is benefited
what type of symbiosis is the relationship between plants and fungi in mycorrhizae
mutualism
vaccines
promote production of antibodies
what requires a host cell
viruses
why is milk heated before being cooled and sold
control pathogen growth in the milk
first step of virus replication
virus connects to a receptor on the cells surface
after virus connects to a receptor then
virus injects DNA or RNA into the cell
after the DNA or RNA is injected
viral genes transcribe and translate by the host cells machinery
after transcription and translation
an infected cell synthesizes more viral protein and genetic material instead of its usual products
after the infected cell synthesizes
virus genomes and protein coats self-assemble
after virus genomes
viruses burst from host cells and kill the cell
