GENERAL HISTOLOGY

EPITHELIUM

CELL JUNCTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is not a function of smooth ER?
A
packages and modifies protein into secretory vesicles
B
produces enzymes for detoxification in liver cells
C
stores calcium ions in muscle cells
D
produces enzymes important in the synthesis of lipids
Explanation: 

Detailed explanation-1: -Smooth endoplasmic reticulum does not play any role in synthesis of protein.

Detailed explanation-2: -Its main functions are the synthesis of lipids, steroid hormones, the detoxification of harmful metabolic byproducts and the storage and metabolism of calcium ions within the cell. The smooth ER is distinguished from the other parts of the endoplasmic reticulum by the absence of membrane-bound ribosomes.

Detailed explanation-3: -The Golgi apparatus is responsible for transporting, modifying, and packaging proteins and lipids into vesicles for delivery to targeted destinations. As the secretory proteins move through the Golgi apparatus, a number of chemical modifications may transpire.

Detailed explanation-4: -The SER has a variety of functions that are often more prominent in certain cell types whose roles require an enhanced SER ability. Four common functions are the mobilization of glucose from glycogen, calcium storage, drug detoxification, and the synthesis of lipids.

There is 1 question to complete.