Class notes
notes 3
- Course
- Institution
Lecture notes of 4 pages for the course BIOL2010 at Ebor (notes class 3)
[Show more]
Seller
Follow
samsam6
Content preview
Notes AND Summary- It Is Highly Likely That the Predecessors of the Very First Cells Were Merely
Conglomerations of Molecules.
- According to the most recent hypotheses, organic molecules accumulated in the oceans as
a result of the action of lightning, rain, and solar radiation on gases present in the
environment or as a result of the spewing of organic molecules from hydrothermal vents.
- Some organic molecules have a propensity to congregate in groups, and it is likely that
these groups assumed the form of droplets, in a manner analogous to the droplets that
form when oil is mixed with water.
-
- These assemblages of organic molecules give the appearance of having been the
precursors to the earliest forms of life, which were primitive cells. At the University of
Miami, Sidney W. Fox and his colleagues created proteins that, when suspended in water,
clumped together to form structures resembling cells.
- These structures, which are referred to as "proteinoid microspheres," expand gradually
through the accumulation of new proteinoid material and eventually bud off smaller
microspheres.
- Fox compared this process to a form of reproduction; nevertheless, the microspheres are
not living cells and do not undergo reproduction.
- Clay particles or even bubbles, as some experts have hypothesised, may have played a
part in the birth of life on Earth by collecting chemicals and concentrating them for the
purpose of synthesis into more complex molecules.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller samsam6. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77254 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now