Your Hair and Fingernails Are Made Up of Flattened Layers

question 98

Multiple Choice

Your hair and fingernails are made up of flattened layers of dead cells.These dead cells are tough and resistant to physical damage because they are filled with

• A) microtubules that prevent bending of the cells.
• B) microfilaments that are actively adding actin monomers to their plus ends.
• C) collagen protein that forms tough ropes.
• D) tubulin that is assembled into stiff filaments.
• E) intermediate filaments made up primarily of keratin proteins.

---

Definitions:

Inferential Statistics

Statistical methods that allow researchers to make inferences or generalizations about a population based on a sample.

Representative Sample

A subset of a population that accurately reflects the members of the entire population.

Effect Size

A quantitative measure of the magnitude of a phenomenon, used to indicate the size of an experimental effect.

Independent Variable

The variable in an experiment that is manipulated or changed to observe its effect on the dependent variable.