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1) Estrogen increases the risk of breast and uterine cancers because ita) inhibits differentiationb) causes dna damagec) turns on the BRCA oncogenesd) acts as a tumor promoter by stimulating cellproliferatione) blocks apoptosis
2) Which of the following is a common difference between normal cells and cancer cells?a) density-dependent inhibition of proliferationb) Contact inhibition of migrationc) growth factor requirementsd) Cell adhesione) all of the above
3) The T antigen of SV40 virus binds to DNA and initiatesa) expression of the virus early genesb) expression of the virus late genesc) proteolytic cleavage of cellular proteinsd) DNA replicatione) DNA strand breaks
4) The RNA viruses that most commonly pick up cellularoncogens are thea) adenovirusesb) retrovirusesc) papilloma virusesd) HIV virusese) hepaptis C viruses
5) The viral raf oncogene produces a constiitutively activeprotein because thea) gene is always onb) kinase domain is mutant and cannot be competitivelyinhibitedc) regulatory domain has been replaced by viral sequences andthe protein cannot be turned offd) GtPase activity is deficient and the protein is always inthe GTP forme) miRNA binding site is mutated so translation cannont beinhibited
What is the chemical name of chlorophyll b and xanthophylls? What is pollination and how does it differ from fertilization?
What would be the genotype and genotype ratio if you crossed wild-type (dominant) female flies with white-eyed (recessive) male flies?
Which of the following is not one of the ways to describe a population in terms of population ecology?
Determine what can a disease like familial hypercholesterolemia tell us about the effects of cholesterol on the people without the disease?
Antibiotic resistance" is frequently cited example of natural selection. In your own words, write a primary post of at least 125 words explaining this example.
what is the meaning of MALT,is it mucosa-associated lymphoid tissue,mean amylase/lipase turnover,mucosal absorbtion of lipids and triglycerides,marginally accetable lactose tolerance?
what is mendels law of independent assortment and what cell division process does it apply to?
The "Primordial soup" includes the mixture of elements and gases which are thought to have started life on the Earth. Specify where did the gases and elements come from?
Study the concepts presented in the pull-down menu located in the upper left corner of Interactive Microscopy. List the order of the colored threads from top to bottom. Which magnification was most useful in making this determination? What optical..
Assume there is a picture of a neuron coming from the spinal cord and synapsing with a muscle fiber. Start in the neuron. Explain the stimulation of the soma.
Which of the following would most likely cause a mutation with the greatest deletrious effect?
In pea plants, genes A,B,C,D and E are located on separate chromosomes, A plant with genotype AABBccDDee is mated with a plant with genotyoe AAbbCCDDEE.
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