viruses re-assesment Flashcards
Most Pathogens are stopped and/or destroyed by?
The skin
What is not a benefit of inflammation?
Less oxygen for viruses and bacteria
Why were soldiers from rural areas of the U.S. more likely to get the 1918 flu
Less immunity from exposure to fewer diseases
Antibodies are
produced by B-cells and connect to virus proteins “hand cuffing” them
Viruses have what property of life?
Mutate and evolve
In transcription after the DNA unzips ______ match up with one side of the DNA
RNA nucleitides
The structure of DNA as presented by franklin, Watson, an crick was a
Double helix
In DNA synthesis the rules of base pairing ensures that
Guanine matches with Cytosine
In DNA replication
Two DNA molecules- 1/2 old and1/2 new are made
What does not occur in translation
The gene gets copied onto RNA
Flue has______genes
less than 10
What helped the flu spread during W.W.1?
Many people were close to get her
Helper t-cell
When HIV attacks these the immune response is uncoordinated and ineffective(AIDS)
Killer t-cell
Finds infected cells and disrupts the cell membrane, killing them
Macrophage
They eat and ‘present’ viral proteins to cells of the specific immune response
Retrovirus
An RNA virus that gets its info copied into a cell DNA with reverse transcriptase
Envelope
Disguise some viruses because its structured like a cell membrane
Suppressor t-cells
slows down the immune response once the disease is under control
Auto immune
immune cells(bored?) attack the bodies own cells
Prion
An infectious protein that causes other proteins to deform-causes ‘mad cow disease
Etaple
British camp where 1918 flu likely started, had pigs, chickens, and crowded humans
Protien
Have a special 3D shape enableing them to do a specific job in the cell
T or F? Prokaryots generally have much similar regulatory sequences for their genes than eukaryotes
True
T or F? All of an organism’s genes are being used to make proteins
False
T or F? Everything we consider a ‘disease’ is caused by a pathogyn
False
T or F? Lac genes in E. coli turn off when lactose binds to the repressor protein unlocking the gene
False
T or F? Vaccines have saved many lives, but improved sanitation and drinking water have saved a lot more
True
T or F? about 40,000 Americans are killed on an average year by the flu
True
T or F? It is thought likely that both the flu and covid were animal (zoonotic) viruses that managed to jump to humans
True
T or F? Vaccines act as a poison, killing viruses and bacteria
False
