Aresearcher attempts to extract specific cells from a human kidney to regenerate and repair a patient's damaged kidney cells. the type of cells the researcher uses are a. totipotent stem cells b. embryonic stem cells c. pluripotent stem cells d. adult stem cells

The type of cells are the ones that can regenerate to any new cells, organs and tissues in the body-the Pluripotent stem cells.

The group of  undifferentiated cells that has the ability to divide in multiple times  into cells and tissues(potent) with the process of mitosis are called Stem Cells. These cells can remain  to be stem cells or differentiate into other specialized cells.

Potency is the ability of stem cells to produce different type of cells. This varies, and depends on the type of cells.

Pluripotent stem cells are the type of cells that have the potency to divide to different types of cells in the body. One example of this is the embryonic  cells that is found in the embryo that can divide into different type of cells in the body expect the placenta cells.

Therefore, the pluripotent cells that  can divide into the hepatic cells in the liver are the prefect choice for the Researcher.

Note if the examiner did not include Pluripotent stem cells as part of the options, obviously. the correct answer would have been Embryonic stem cells, but since the Pluripotent stem cells was included, this is the correct answers because the embryonic cells are Pluripotent!

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measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.