Homework Help

Summarize briefly the transition from first primitive cells through the evolution of...

user profile pic

user5265955 | (Level 3) eNoter

Posted June 5, 2013 at 11:12 PM via web

dislike 1 like

Summarize briefly the transition from first primitive cells through the evolution of cell types and the changes in the abiotic conditions that coincided.

 

1 Answer | Add Yours

user profile pic

Kay Morse | College Teacher | (Level 1) Senior Educator

Posted June 6, 2013 at 10:21 PM (Answer #1)

dislike 1 like

the first cell membranes are thought to have self-assembled from simple, single-chain lipids synthesized in the environment (Budin I, Szostak JW. "Physical effects underlying the transition from primitive to modern cell membranes")

According to Budin and Szostak, low levels of phospholipids drove membrane growth. Decreasing fatty acids then increase phospholipids. this synthesizing is advantageous in competing for early stage lipids and opens new avenues of selectivity.

Sources:

Join to answer this question

Join a community of thousands of dedicated teachers and students.

Join eNotes