When the function of the newly made polypeptide is to be secreted from the cell where it has been made, what must occur?
A) It must be translated by a ribosome that remains free of attachment to the ER.
B) Its signal sequence must target it to the ER, from which it goes to the Golgi.
C) It has a signal sequence that must be cleaved off before it can enter the ER.
D) It has a signal sequence that targets it to the cell's plasma membrane where it causes exocytosis.
E) Its signal sequence causes it to be encased in a vesicle as soon as it is translated.
The eukaryotic cell cycle and cell division in an organism with six chromosomes.
Cell division in common life cycles
A Prokaryotic Cell
Attributed to Thomas Dennis or William Searle, Chest, made in Ipswich, Massachusetts.
Three-cell model
Interaction between a CD8+ T cell and its target.