What is the function or the rough ER?

Answer 1

The ER functions as an intracellular highway.

There are two types of ERs- the rough ER and the smooth ER.

A. The rough ER has ribosomes bound to it.

functions:

1. It transports proteins for export, synthesized by ribosomes.

2. It makes membranes too.

3. It makes secretory proteins-proteins secreted by the cell- and transports them in vessicles (membranous sacs that walk along microtubles with protein "feet" powered by ATP) to the Golgi Body, which sort, processes, and packages them to different places.

B. The smooth ER has no ribosomes, but enzymes embedded in the membrane.

functions:

1. It synthesizes lipids (ex. phospholipids and steroids). For example, the ER in the ovaries and testes synthesize steroid hormones.

2. Enzymes in the smooth ER help regulate the amount of sugar released from liver cells into the blood stream.

3. Detoxifies alcohol and poison

4. storage of calcium ions

ex. Necessary for contraction of in muscle. When a nerve signal stimulates a muscle cell, calcium ions leak from the smooth ER into the cytoplasmic fluid, where they trigger the contraction of the cell.

5. In junction with the Golgi complex, it manufactures lysosomes (an organelle made of hydrolitic enzymes enclosed in a membranous sac which digests food) and peroxisomes (organelle which detoxifies poisons and creates hydrogen peroxide)

Answer 2

The rough endoplasmic reticulum (ER) is responsible for protein synthesis in the cell. It has ribosomes attached to its surface, which are involved in translating mRNA into proteins. These proteins are then processed and modified within the rough ER before being transported to their final destinations in the cell.

Answer 3

store energy

Answer 4

something about the cell

Answer 5

Figure it out ;)