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1. Hemoptopoietic stem cell can give rise toa) eythorocytesb) erythocytes and lymphocytesc) all blood cells and macrophagesd) all blood cells,macrophages,and skin cellse) all blood cells,macrophages,skin cells
2. When stem cells of the intestinal epithelium and epidermisdivide, they give rise to two different cells: one stem cell andone _________ cella) gobletb) cryptc) g0d) transit-amplifyinge) eteroendocrine
3. Mammalian embyonic stem cells are cultured from cells taken froma) the 4-cell embyob) the inner cell massc) trophoblast cellsd) amnion cellse) chorion cells
4. tumor initiation occurs in aa) single protein moleculeb) single cellc) few cellsd) single tissuee) single organ
5.Nonhereditary retinoblastoma develops only whena) a somatic mutation inactivates the Rb geneb) a somatic mutation activates the Rb genec) two somatic mutations inactivate two serparate Rbgenesd) one germ-line mutation and one somatic mutation inactivateRb genese) two germ-line mutations inactivate two sep Rb genes
diabetes is one of the leading health risks in the united states affecting more than 25 million americans. answer
The storage roots of radishes may be long, round or oval. Showgenotypes of the following and show the ratios as well:
q. hutchinson-gilford progeria is an exceedingly rare human genetic disorder in which there is very early senility and
AIDS is often treated with a "cocktail" of several antiviral agents at once. Why is the cocktail more effective than a single agent? What is a physician trying to prevent by prescribing several drugs at once?
Your friend is studying mouse fur color and has isolated the GPCR responsible for determining its color, as well as the extracellular signal that activates the receptor.
What is the relationship between an objective lens' numerical aperture and resolving power? A. As numerical aperture increases, resolving power decreases.
How would genetic variation be affected if during meiosis I maternal chromosomes always lined up together on one side of the metaphase plate and paternal chromosomes always lined up on the other side (ignoring the effects of crossing over)?
What is the significance of the chloroplasts structural feature that the thylakoid membrane is located between the stroma and the thyloakoid space.
Tetanus is caused by a bacteria that enter the body through wounds in the skin. The bacteria produce a toxin that causes septic muscle contraction . Death often results from failure of the respiratory system .
How and when do the molecules produced by adipocytes result in adverse consequences which are associated with obesity?
A stock homozygous for three recessive autosomal genes, a, b,and c, not necessarily linked on the same chromosome, ismated to a stock homozygous for their dominant wild-typealleles. F1 females are then backcrossed to males of thehomozygous recessi..
Describe the contributions of the following eukaryotic microbes to the biofuels industry.
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