Pine Bark: A 2- to 3-inch layer of pine bark is good for weed control. Pine bark makes an attractive, usually dark-colored mulch. It can be purchased in various particle sizes, from shredded to large-sized particles, called nuggets. Large pine bark nuggets float in water and may not stay in place during a heavy rain.
Rough endoplasmic reticulum is a cell organelle that helps in protein synthesis as well as packaging of materials into lysosomes and secretory activities of cell.ough endoplasmic reticulum is so called because its outer surface  is studded with ribosomes. These ribosomes serve as the sites for  the translation of RNA into proteins. â¦ The primary function of the  rough endoplasmic reticulum is protein synthesis.
By the end of this lesson, you'll understand why the endoplasmic reticulum is one of the stars of the team! Types of Endoplasmic Reticulum. The endoplasmic reticulum is like two factories in one. There's rough endoplasmic reticulum, or rough ER, and smooth endoplasmic reticulum, or smooth ER. Rough ER