Question

what happens to proteins within the endoplasmic reticulum

A) they are synthesized
B) they are broken down
C) they are converted into lipids
D) they are modified by enzymes

Answer 1

The correct answer is A. They are synthesized. 

In the endoplasmic reticulum, proteins are synthesized on to the surface of a rough endoplasmic reticulum. With the help of ribosomes which contains mRNA, the small bounded organelles enter the chamber where mRNA which contains proteins is being released.
Endoplasmic reticulum also regulates the quality of the proteins.

Answer 2

A protein within the endoplasmic reticulum is synthesized.

Further Explanation:

In biology, Endoplasmic Reticulum (ER) is a continuous membrane system that makes a series of flattened sacs inside cytoplasm of the eukaryotic cells and provides multiple functions. All the eukaryotic cells consist endoplasmic reticulum. On the basis of their functional and physical characteristics they are divides into two types:

• Smooth endoplasmic reticulum: They do not consist of any ribosome and synthesize lipids.
• Rough endoplasmic reticulum: they consist of the ribosome on their outer surface because of this their surface is rough. They help in synthesizing protein.

Important functions of the ER are:

• Synthesis protein
• Protein folding
• Protein modification
• Transport of protein

Golgi apparatus is a folded membranous structure present in eukaryotic cells and has vital intracellular functions. It has flattened sacs in the membrane which are referred to as cisternae. ER synthesizes protein and transfers it to the Golgi apparatus.

Learn more:

1. Learn more about the cellular respiration https://brainly.com/question/543244
2. Learn more about the diffusion https://brainly.com/question/1386629
3. Learn more about the phospholipids bilayer https://brainly.com/question/751529

Answer Details:

Grade: High School

Subject: Biology

Chapter: Cell

Keywords:  

Homeostasis, cell, Golgi apparatus, optimal condition, eukaryotic cell, packaging, modification, sorting, flattened sacs, membrane, cisternae.