The picture shows a group of muscle cells in the heart. All of these muscle cells beat in unison to push blood in timing with th
e rhythm of the heart, at the direction of nearby nerve cells. These muscle cells could best be called a
A) organ.
B) tissue.
C) macromolecule.
D) organ system.
Gene expression in all organisms depends on protein synthesis. What is the last stage in protein synthesis, in which amino acids are assembled by tRNA? translation. The steps in proteins synthesis are identical in all six organisms.
