New User Special Price Expires in

Let's log you in.

Sign in with Facebook


Don't have a StudySoup account? Create one here!


Create a StudySoup account

Be part of our community, it's free to join!

Sign up with Facebook


Create your account
By creating an account you agree to StudySoup's terms and conditions and privacy policy

Already have a StudySoup account? Login here

BIOL 102 Lecture Notes 9-1-16 Chapter 25 (The History of Life on Earth)

by: Zach Notetaker

BIOL 102 Lecture Notes 9-1-16 Chapter 25 (The History of Life on Earth) BIO 102

Marketplace > University of South Carolina > BIO 102 > BIOL 102 Lecture Notes 9 1 16 Chapter 25 The History of Life on Earth
Zach Notetaker

Preview These Notes for FREE

Get a free preview of these Notes, just enter your email below.

Unlock Preview
Unlock Preview

Preview these materials now for free

Why put in your email? Get access to more of this material and other relevant free materials for your school

View Preview

About this Document

This set of notes includes information from the class lecture on Chapter 25 (9-1-16) as well as information from the textbook.
General Biology
Mihaly Czako
Class Notes
25 ?




Popular in General Biology

Popular in Department

This 1 page Class Notes was uploaded by Zach Notetaker on Sunday September 4, 2016. The Class Notes belongs to BIO 102 at University of South Carolina taught by Mihaly Czako in Fall 2016. Since its upload, it has received 13 views.


Reviews for BIOL 102 Lecture Notes 9-1-16 Chapter 25 (The History of Life on Earth)


Report this Material


What is Karma?


Karma is the currency of StudySoup.

You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 09/04/16
BIOL 102 Lecture Notes 9/1/16 Chapter 25 (The History of Life On Earth)  Fossil record shows macroevolutionary changes over large time scales  Chemical and physical processes in early Earth may have produced simple cells through  sequence of stages: 1. Abiotic synthesis of small organic molecules 2. Joining of these molecules into macromolecules 3. Packaging of molecules into protocells 4. Origin of self­replicating molecules  Evidence not yet convincing that early atmosphere was reducing o Instead of forming in atmosphere, first organic compounds may have been synthesized  near volcanoes or deep sea vents o Miller­Urey simulated and found that organic molecules could’ve formed w/ various  possible atmospheres  Hydrocarbons present in deep­sea vents, early ocean was acidic  Amino acids have also been found in meteorites  Abiotic synthesis of Macromolecules o RNA monomers produced spontaneously from simple molecules o Small organic molecules polymerize when concentrated on hot sand, clay, or rock     Protocells: o Replication and metabolism are key properties of life and may have appeared in  protocells o Protocells may have formed from fluid­filled vesicles in membrane­like structure o Vesicles exhibit simple reproduction and metabolism & maintain internal chemical  environment different from external  First genetic material probably RNA, not DNA  RNA molecules called ribozymes have been found to catalyze many reactions  Natural selection has produced self­replicating RNA  RNA molecules that were more stable or replicated quicker would have left the most descendant  RNA molecules  RNA maybe = template for DNA  more stable genetic material  Few individuals have fossilized  Fossil record is biased in favor of species that: o Existed for long time o We abundant and widespread o Had hard parts  Absolute ages of fossils determined by radiometric dating  Radioactive “parent” isotope decays to “daughter” isotope at constant rate o Each isotope known as half­life  time required for ½ parent isotope to decay


Buy Material

Are you sure you want to buy this material for

25 Karma

Buy Material

BOOM! Enjoy Your Free Notes!

We've added these Notes to your profile, click here to view them now.


You're already Subscribed!

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

Why people love StudySoup

Steve Martinelli UC Los Angeles

"There's no way I would have passed my Organic Chemistry class this semester without the notes and study guides I got from StudySoup."

Jennifer McGill UCSF Med School

"Selling my MCAT study guides and notes has been a great source of side revenue while I'm in school. Some months I'm making over $500! Plus, it makes me happy knowing that I'm helping future med students with their MCAT."

Bentley McCaw University of Florida

"I was shooting for a perfect 4.0 GPA this semester. Having StudySoup as a study aid was critical to helping me achieve my goal...and I nailed it!"


"Their 'Elite Notetakers' are making over $1,200/month in sales by creating high quality content that helps their classmates in a time of need."

Become an Elite Notetaker and start selling your notes online!

Refund Policy


All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email


StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here:

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to

Satisfaction Guarantee: If you’re not satisfied with your subscription, you can contact us for further help. Contact must be made within 3 business days of your subscription purchase and your refund request will be subject for review.

Please Note: Refunds can never be provided more than 30 days after the initial purchase date regardless of your activity on the site.