Biology · CELL THE UNIT OF LIFE

The given diagram illustrates the Golgi apparatus (Figure 8.6). Which of the following statements accurately describes the structural dimensions and arrangement of the cisternae visible in this organelle?

1. A
   They are flat, disc-shaped sacs of \( 0.5\,\mu\text{m}\text{ to }1.0\,\mu\text{m} \) diameter, stacked parallel to each other in varied numbers.
2. B
   They are helical filaments measuring \( 5\text{--}10\,\mu\text{m} \) that connect the outer nuclear membrane directly to the plasma membrane.
3. C
   They are cylindrical barrels composed of nine peripheral triplets of tubulin without any membrane sacs.
4. D
   They are spherical granules of diameter \( 2.0\text{--}4.0\,\mu\text{m} \) randomly scattered in the cytoplast.