One method for separating polypeptides makes use of their different solubilities. The solubility of large polypeptides in water depends upon the relative polarity of their R groups, particularly on the number of ionized groups: the more ionized groups there are, the more soluble the polypeptide.
1. Which of each pair of the polypeptides that follow is more soluble at the indicated pH?
(a) (Gly)_20 or (Lys-Ala)_3 at pH 7.0:
O (Gly)_20
O (Lys-Ala)_3
(b) (Glu)_20 or (Phe-Met)_3 at pH 7.0:
O (Glu)_20
O (Phe-Met)_3

spiders belong to a group of arachnids.

arachnids have the following traits :

they have two body parts.

they have eight legs unlike insects which have 6 legs.

they have no wings.

these traits distinguish them from insects.

the information that antonio is doubting us the statement that spiders differences are as a result of being first to evolve.

this is because the evolution of one species is independent of the other species.

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs

c: warm water flows from the western tropical pacific toward south america. that should be the right answer! hope it .