Which of the following correctly describes the pathway taken by a protein destined for secretion from an animal cell?
a)rough er → transport vesicle → golgi → transport vesicle → lysosome → plasma membrane
b)plasma membrane → transport vesicle → golgi → transport vesicle → rough er
c)rough er → transport vesicle → golgi → transport vesicle → plasma membrane

C)

Explanation:

This is a secretory pathway where protein is going through the endoplasmic reticulum, then transport vesicle and Golgi apparatus, and then the transport is going through lysosomes and the plasma cell membrane.

The Golgi apparatus is processing proteins that are made in the ER (endoplasmic reticulum).

This pathway is processing proteins and lysosomal enzymes.  

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.