What is a stem cell?An embryo cellAn undifferentiated cellA differentiated cellAn adult cell

Which of the following is the best definition of a stem cell?A differentiated cell that can undifferentiate into other cell types.An unspecialised cell that can differentiate into other cell types.A specialised cell that cannot differentiate into other cell types.A specialised cell that can undifferentiate into other cell types.

What is a stem cell?An embryo cellAn undifferentiated cellA differentiated cellAn adult cell2Which of the following is a good source of adult stem cells in humans?Bone marrowMuscle cellsBlood cellsNerve cells3Which of the following is an advantage of embryonic stem cells compared with adult stem cells?There are potential ethical issuesThey are totipotentThey are multipotentThey could be rejected when transplanted into an adult4Unspecialised stem cells in plants are grouped together in structures called:MeristemsLeavesStemsShoots5Which of the following statements about plants is not true?Stem cells from plants can be used to produce new plant cells quickly and economicallyThere are no ethical issues with the use of plant stem cellsExposed meristem cells dipped in auxin powder and planted will produce rootsPlants stop growing when they reach adulthood

Stem cells are un-differentiated. This means that they haven’t yet to do a specific function. They can create more stem cells or differentiate (become a different type of body cell) to perform another function.

In humans, there are essentially TWO types of stem cells: embryonic stem cells (found only in the embryo) and adult stem cells (found, for example, in bone marrow).Evaluate the ability of these TWO types of stem cells to divide and differentiate.

Which of the following statements about adult or tissue stem cells is CORRECT?Group of answer choicesTissue stem cells are a ready source of cells that can be harvested from a patient and delivered back into that patient.Tissue stem cells can be isolated from any adult tissue and be used to treat a disease in a distant tissue by turning into a new cell type.Tissue stem cells gives rise to all other cell types of the body during development.Tissue stem cells reside in a niche within an adult tissue and are critical for the cellular turnover and maintenance of that tissue alone.