In examining several amino acids, you want to identify the feature or features that differentiate one amino acid from another. what part of the amino acid should you focus on?
a. the amide groups
b. the amino groups
c. the carboxyl groups
d. the hydrogen atoms
e. the side chains

In what way do investigations build scientific knowledge? the results of investigations lead to questions that cannot be tested. they reflect the opinions and social values of scientists, ensuring valid information. the results of investigations lead to new questions, which lead to new investigations. they are not influenced by the research of earlier scientists, so they are able to address gaps in understanding.i