Week 1 quiz questions Flashcards
Week 1 material
Cells in the ___ may act as a resevoir in which HIV can be protected form antiviral drugs.
The Central Nervous System
What is the role of reverse transcriptase in HIV infection?
It converts RNA into double stranded DNA.
Which statement is true about vaccines?
Vaccines require booster injections to maintain lifelong protection.
After sexual transmission of HIV, a person can be infected yet seronegative for ___ months?
6-14
What if the following remains a significant cause of morbidity and morality worldwide?
Infectious Diseases
Which statement is true about fungal infections?
They are controlled by phagocytes and T lymphocytes
In which primary immune deficiency is there a partial to complete absence of T cells
DiGeorge syndrome
What disease involves the deposition of circulating immune complexes containing antibody?
Systemic Lupus Erythematous (SLE)
Hypersensitivity is best defined as a (n)?
Altered immune response to an antigen that results in disease
The class of antibody involved in type I Hypersensitibity reaction is ?
IgE
What mechanism occurs in Raynaud phenomenon that classifies it a s type III hypersensitibity?
Immune complexes are deposited in the capilary beds, blocking circulation
Deficiencies in this element can produce depression of both B and T-cell functions?
Zinc
In type I hypersensitibity reaction, when souluble antigens from infectious agents enter cirbulation.
Neutrophils granules and toxic oxygen products
Stress aged syndrome results in decreased ?
Immune system
Stress induced norepinephrine results in ?
Peripheral vasoconstriction
The effects that low serum albumin has on the central stress response is to ?
Impair circulation of the epinephrine and norepinephrine
During the stress response, increased anxiety, vigilance, and arousal is prompted by?
Norepinephrine
Which of the viruses below are oncogenic DNA viruses?
Papovaviruses, adenoviruses, and herpesvirses
Inherited mutations that predispose to cancer are almost invariabley what kind of gene?
Tumor - suppressor genes
By what process does the RAS gene convert from proto-oncogene to an oncogene?
By alternating one or more nucleotide base pairs.
Cells from a muscular tumor show a reduced ability to form new muscle and appear highly
Anaplasia
In chronic myeloid leukemia (CML) a piece of chromosome 9 fuses to a piece of chromosome 22
Chromosome Translocation
Which of the following cancers originate form connective tissue?
Osteogenic sarcoma
Which characteristic in women correlates with the high morbidity of cancer of the colon, liver, gallbladder, pancreas, breast, uterus, and kidney?
Women who had high body mass index
What congenital malformation is commonly linked to acute leukemia in children?
Down syndrome
