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Plasma membranes

plasma membrane

(Science: cell biology) The external, limiting lipid bilayer membrane of cells.


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Re: O level Past paper exam question on gland secretion

... Hydrophilic that are produced molecules also help solubility through plasma membranes, which is sometimes a requirement for Endocrine molecules and assisting with diffusion ...

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by Amphibitile
Sun Jun 23, 2013 12:37 am
 
Forum: General Discussion
Topic: O level Past paper exam question on gland secretion
Replies: 1
Views: 1193

Please Help with Homework (fairly easy questions)

... in all types of cells? A) cytoplasm B) ribosomes C) a nucleus D) a plasma membrane C) 2. The boundary structure that physically defines a cell ... are tiny “machines” in the cell that produce A) proteins. B) DNA. C) membranes. D) organelles. A) 4. Which of the following statements is false? ...

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by billyfisher100
Wed Feb 15, 2012 6:46 pm
 
Forum: General Discussion
Topic: Please Help with Homework (fairly easy questions)
Replies: 6
Views: 30364

Please Help with Homework (fairly easy questions)

... in all types of cells? A) cytoplasm B) ribosomes C) a nucleus D) a plasma membrane 2. The boundary structure that physically defines a cell ... are tiny “machines” in the cell that produce A) proteins. B) DNA. C) membranes. D) organelles. 4. Which of the following statements is false? ...

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by WishIknewbio
Wed Feb 15, 2012 6:02 pm
 
Forum: General Discussion
Topic: Please Help with Homework (fairly easy questions)
Replies: 6
Views: 30364

Cell membranes

... My student book is completely useless. Can someone outline the roles of membranes within cells and at the surface of cells? And; state the plasma (cell surface) membranes are partially permeable barriers. HELP :(

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by Boku
Sat Oct 15, 2011 2:07 pm
 
Forum: Cell Biology
Topic: Cell membranes
Replies: 2
Views: 1902

Re: Cell membrane targeting signals.

... described. However, proteins destined for incorporation into the plasma membrane or the membranes of the ER, Golgi, or lysosomes are initially inserted into the ER membrane instead ...

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by Fransis
Tue Sep 06, 2011 9:39 am
 
Forum: Cell Biology
Topic: Cell membrane targeting signals.
Replies: 3
Views: 5956
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