Codons that serve as stop signals for translation are recognized by

answer; ///(b) it is composed of four protein chains and four heme groups;

there is no stairs in bungalow

explanation:

poof

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.