User Details For: tcss6s
Essay List
Analysis of Commercial Vitamin C Tablets. (Ascorbic acid content in one tablet)
- 1310 words (5 pages)
- 62
- 1
Sleepwalking
- 506 words (2 pages)
- 67
- 3
An interview of an old man about his teenage life in 1930s
- 928 words (4 pages)
- 61
- 0
Comments List
Also about the "carbohydrates in the cell membrane"
It is actually the cholesterol which makes it flexible yet sturdy. cholesterol reduces the membrane's fludity at normal temp. by blocking the movement of the phospholipids. while it prevents it from solidifcating by distrupting the regular packing of phospholipids.carbohydrates are used to do another job - cell-cell recognition.- 01/01/2005
- 03:52:50
- Score: 3 out of 3 people found this comment useful.
A little correction about membrane proteins.
Proteins embedded in the cell membrane are responsible for transporting substances in/out of the cell(And actually a lot more other functions). (For this function, it's basically for small substances only, as the protein itself cannot be too large) (For larger substances, digestion is needed, or the cell can simply take it up by phagocytosis) Passive transport occurs when the substance is diffused down the concentration gradient. (From Hi concn. to Low concn.) And active transport occurs when the cell needs to take up substances against the concn. gradient. Active transport also takes up energy (ATP).- 01/01/2005
- 03:44:05
- Score: 3 out of 3 people found this comment useful.
I don't know why all arrows has turned into -&gt
if you see a "-&gt" it is an right arrow, just to remind you that..i'll try to fix it.. -_-- 26/12/2004
- 10:06:20
- Score: 0 out of 0 people found this comment useful.