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Adult stem cells, such as those in the bone marrow, brain, or hair follicles, can best be described as ______, whereas embryonic stem cells are described as ______.
a. totipotent; pluripotent
b. pluripotent; multipotent
c. multipotent; pluripotent
d. totipotent; multipotent
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- Stem cells have the potential to transform into any of the various cell types in the body, and thus researchers have explored how stem cells may be used to treat different conditions. Which conditions benefit most from this treatment? At least 351 companies in the United States are now offering unapproved stem cell procedures at 570 clinics. If you had a serious illness such as Parkinson's disease and found an unregulated clinic that offered to cure your illness using stem cell therapy, would you accept the offer? What do you think is the reason that FDA and state medical boards are indifferent to those treatment; are unaware of the scope of the problem or simply are ignoring itTumors involve a malfunction in this cellular process. a. transcription b. translation c. phagocytosis d. mitosisWhich of the following statements is true? a. once a person reaches maturity, cell division stops unless it is to repair a wound b. cell division in an adult signifies cancer c. some specific cells throughout the body retain the ability to divide and replace themselves d. growth continues on throughout life of an adult human
- Some types of cancers are treated with surgery, chemotherapy, stem cell replacement or radiation, similar to ultraviolet light. Why might it be beneficial to irradiate cancer cells? Choose the Best answer. A. it kills off all the cancer cells. B. it forces all cancer cells into G0 C. it will halt cell division and possibly be forced into apoptosis D. it could kill off the cancer cells, halt cell division or possibly force the cell into apoptosisIf you were to compare stem cells to an everyday object or situation, what would they be like and why? I need some examples for this. It's very hard to think of one.Which of the following proteins would least likely promote arrest of cell division or apoptosis? Select one: a. p21 b. superoxide c. retinoblastoma d. p53 e. cyclin
- .........has highest potential to contribute to the formation of an organism, multipotent stem cells totipotent stem cells pluripotent stem cell unipotent cellWhich of the following cell types would you expect would grow and divide continuously if given sufficient nutrients and mitogens (select all that apply)? A. Carcinoma cells from a liver biopsy B. Embryonic Stem Cells C. Normal human liver cells D. HeLa Cells E. Brain cells from miceIdentify which of the following statements is a lie? Select one: a. Apoptosis occurs as the body produces certain enzymes that initiate degradation of nuclear and cytoplasmic material, breaking the cell into necrosis bodies. b. Apoptosis helps maintain a healthy and normal population of cells. c. Apoptosis plays an essential role in growth, immune surveillance, and embryological development.
- Which of the following statements about potency is correct? O A. Committed progenitors have more potency than totipotent stem cells. B. Multipotent stem cells have higher potency than pluripotent stem cells. C. Unipotent stem cells are different from normal somatic cells because they can self-renew. D. Adult tissues have many totipotent stem cells in their niche.The majority of the cells undergo selective activation of the DNA which would lead to cells developing specialized structures and specialized features, a process known as a. differentiation b. apoptosis c. cell division d. cytokinesisWith regard to cancer cells, which of the following statementsare true?A. Cancer cells are clonal, which means they are derived from asingle mutant cell.B. To become cancerous, cells usually accumulate multiplegenetic changes that eventually result in uncontrolledgrowth.C. Most cancers are caused by oncogenic viruses.D. Cancer cells have lost the ability to properly regulate celldivision.