Scientists Have Researched Methods to Transplant Stem Cells to Human

question 53

Multiple Choice

Scientists have researched methods to transplant stem cells to human heart tissue to repair severe damage by cardiovascular disease.Studies in model systems have shown that if the transplanted stem cells are not washed with a buffered saline solution before transplantation, they adhere, adapt, and survive better.Which statement best explains this observation?

• A) The microenvironment surrounding stem cells is improved by a washing step before transplantation.
• B) A supportive environment for stem cell adhesion to existing heart tissue is supplied by the extracellular matrix surrounding the stem cells.
• C) Transplanted stem cells require certain proteins and proteoglycans present in the extracellular matrix of the damaged heart tissue.
• D) The extracellular matrix surrounding the damaged heart tissue provides all the necessary proteins and proteoglycans for adherence of transplanted cells.
• E) Biomolecules necessary for successful transplantation are secreted into the stem cells' extracellular matrix when the cells are stimulated by a washing step before transplantation.

Identify and understand dysfunctional interactions and lack of family support.

Assess and analyze family structures.

Recognize and categorize various family life cycles.

Identify and understand diverse family types.

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Definitions:

Nuclear Receptor

A class of proteins within cells that, upon binding with a ligand, can act as transcription factors to affect gene expression.

Lipid-soluble

A characteristic of compounds that can dissolve in fats and oils but not in water, influencing their absorption and transport in the body.

G Protein

A type of protein that acts as a molecular switch inside cells, playing a critical role in transmitting signals from various stimuli outside the cell.

Blood Levels

Typically refers to the concentration of substances (such as glucose, hormones, or drugs) circulating within the bloodstream.