Question

Examine the model of the secretion of a protein into the environment surrounding a cell. Identify and organize the organelles involved in the process, from protein synthesis through secretion. A) Golgi apparatus, vesicle, cell membrane B) mitochondria, ER, lysosome, cell membrane C) ribosome, Golgi apparatus, lysosome, cell membrane D) ribosome, ER, Golgi apparatus, vesicle, cell membrane

Answer 1

Answer:

D) Ribosome, ER, Golgi apparatus, vesicle, cell membrane.

Explanation:

Ribosomes are mostly found on the memranes of the rough endoplasmic reticulum of cells. They have ribonucleic acid molecules and are responsible for the synthesis of proteins within the cell.

The endoplasmic reticulum is a membranous network distributed within the cell and is responsible for the transport of the proteins synthesized by the ribosomes.

The Golgi apparatus transport synthesized products to be secrete at the cell membranes. Glycoproteins are also manufactured at in the Golgi apparatus.

The vesicles act as storages in which these products are kept and it open up at the cell membrane to release them to the surroundings.

Answer 2

Answer:

D) ribosome, ER, Golgi apparatus, vesicle, cell membrane

Explanation:

This is the sequence of  the pathways for the process of gene expression for protein synthesis.

It begins in the Ribosomes with the process of translation of the transcribed mRNA, to synthesise a polypeptide chain of Amino acids. These are passed into the rough- ER lumen or membrane.where they are modified; checked if the protein  is  well folded, and sugar molecules are also added . They are later  packed in small coated vesicles en route  the Golgi complex.

They are moved by cisternae migration by  this vessicle, which  are micro-tubules which makes use of  cell cytoskeleton to navigate and move through the cytoplasm  to trans-golgi ,,where they are sorted out .Some sugar molecules are removed while new  are added. They are  later  transported to the trans-golgi network/ apparatus; for packaging to secretory vesicles and transport vesicles. The latter fused with the plasma membrane , and secreted to the outside by Exocytosis as uncoated protein.