Question

Which of the following cells have a high density of smooth endoplasmic reticulum?
A Epithelial cells in the small intestine.
B Muscle cells in the thighs of long-distance runners.
C Pancreatic cells which secrete digestive enzymes.
D Ovarian cells which produce the hormone oestrogen.

Answer 1

Smooth ER (SER) acts as a storage organelle. It is important in the creation and storage of lipids and steroids. Steroids are a type of ringed organic molecule used for many purposes in an organism. They are not always about building the muscle mass of a weight lifter. Cells in your body that release oils also have more SER than most cells.

Answer 2

i would go with muscle or Pancreatic

Answer 3

@mathmate

Answer 4

@JFraser

Answer 5

@Gunnerkane

Answer 6

The answer say it's D

Answer 7

i say D.

Answer 8

Can u pls explain why it's D? @Gunnerkane

Answer 9

The endoplasmic reticulum is a multifold membranous structure within eukaryotic cells which plays a major role in the synthesis of the complex molecules required by the cell and the organism as a whole. Often the membranes of these structures are lined with ribosomes on their outer surfaces, giving them a rough appearance. These parts are called the rough endoplasmic reticulum to contrast them with the smooth endoplasmic reticulum where there are no attached ribosomes.

The ribosomes on the rough endoplasmic reticulum manufacture proteins which enter the channels of the endoplasmic reticulum and move to places where they can create pockets. These pockets can then break off as vesicles to transport their protein cargo to the Golgi complex for distribution.

Examples of protein synthesis by the rough endoplasmic reticulum are the proteins produced in secretory cells. These include the digestive enzymes produced in the stomach and the protein hormones like insulin produced in the pancreas. Organ systems which produce many proteins have cells with a large amount of rough endoplasmic reticulum.

The smooth endoplasmic reticulum plays a major role in synthesizing lipids by means of enzymes embedded in these smooth membranes. It produces the phospholipids and cholesterol used in membrane formation, and along with the membrane proteins produced by the rough ER it can synthesize more membrane for itself, for the Golgi complex, the cell membrane, lysosomes, and others.

In liver cells the smooth ER contains enzymes for the detoxification of harmful drugs and metabolic by-products. In the reproductive organs, smooth ER in the cells produces the steroid hormones testosterone and estrogen.

Answer 10

basically in your ovaries its slimy

Answer 11

kinda like semen after sex

Answer 12

Thnx @Gunnerkane

Answer 13

didn't mean to make u read but reading the answer is gettin the answer

Answer 14

Can read also:
http://science.jrank.org/pages/1312/Cell-Endoplasmic-reticulum.html
near the end of the third paragraph.

Answer 15

Thnx @mathmate

Answer 16

You're welcome! :)