Use the Following to Answer the Questions Below

question 6

Multiple Choice

Use the following to answer the questions below:
Aspartic acid, an acidic amino acid, can have four different forms in solution. These four forms are given in the response list. For each of the conditions or characterizations, select from the response list the form of aspartic acid that will be dominant. Responses may be used more than once or need not be used at all.
-Positively-charged form

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Definitions:

Cross-Sectional Method

An observational research method that analyzes data from a population, or a representative subset, at a specific point in time.

Longitudinal

A research design in which the same subjects are observed or tested repeatedly over a period of time.

Correlational

Referring to a type of research design that examines the relationship between two or more variables to determine if they are associated in some way.

Longitudinal Research

A research design that involves repeated observations of the same variables over a period of time, extending from months to years.