By common practice, scientists place scavengers at the same trophic level as which organism?
question 6 options:
a. secondary consumers
b. decomposers
c. primary consumers
d. producers

A. secondary consumers

Six amino acids have side chains that are polar but not charged. these are serine (ser), threonine (thr), cysteine (cys), asparagine (asn), glutamine (gln), and tyrosine (tyr). these amino acids are usually found at the surface of proteins, as discussed in the proteins 2 module.