*BIO* How are chemical and physical properties of amino acids different?

The R groups of the amino acid are different.
Some amino acids do not have a central carbon atom.
Some amino acids have a carbonyl group.
Some amino acids do not have an amino group.

For a comparative or experimental investigation, scientists often make a testable about a scientific question, and then they test it in the investigation. a. control b. hypothesis c. procedure d. system

Based on the topographic map of mt. st. helens, what is the contour interval of the volcano about height is 2,950 m?

What evidence did mendel find that supported his law of independent assortment? a. some traits are controlled by several different genes. b. a trait can be passed on from a parent to an offspring. c. most traits have a dominant form and a recessive form. d. different traits are passed on independently of each other.