a stop codon is a trinucleotide sequence within a messenger RNA molecule that signals a halt to protein synthesize .
Humans belong to the D) chordates group
I have a feeling its b but probs wrong so would double check
The answer to this is letter A) mitochondria. Mitochondria is an organelle that is bounded or wrapped in a double membrane. These membranes or <span>phospholipid bilayer </span>contains embedded proteins. The outer layer is characterized to be smooth while the inner layer has cristae. These cristaes are the folds.
