ShmoopTube

Where Monty Python meets your 10th grade teacher.

Search Thousands of Shmoop Videos

AP Biology 2.3 Evolution 30 Views


Share It!


Description:

AP Biology 2.3 Evolution. What did the Urey-Miller experiments do?

Language:
English Language

Transcript

00:04

Here’s your shmoop du jour, brought to you by ‘50s era science. [Man using a chainsaw to relieve a man's headache]

00:08

Back when cigarettes cured cancer!

00:10

Okay, here’s our question. [Man smoking a cigarette]

00:12

The Urey-Miller experiments…what?

00:15

And here are the potential answers. [mumbling]

00:21

Endless theories suggest how life may have begun on earth.

00:23

Be it a benevolent creator, an asteroid, or even a giant spaghetti monster. [a giant spaghetti monster in a populated street]

00:29

But Urey and Miller tried to show how organic life could start without religion or sentient

00:35

noodles.

00:36

In 1952, they filled a flask with carbon dioxide, nitrogen, hydrogen sulfide, and sulfur dioxide. [chemical substances added to a erlenmeyer flask]

00:43

And in the tradition of all great mad scientists, they zapped it to life with electricity.. zapped it until it tried to come[frankenstein monster zaps an erlenmeyer flask with electricity and breaks]

00:52

to life.

00:54

After the experiment was complete, they discovered the flask now contained amino acids. [erlenmeyer flask with amino acids]

00:59

The point was not to start with organic molecules...

01:02

As a matter of fact, all of the component molecules were deader than Eddie Murphy’s

01:07

film career.

01:08

And Urey and Miller didn’t quite produce prokaryotic cells.

01:11

They weren’t full-on Frankensteining. [Erlenmeyer flask shatters and turns green]

01:14

But just because they didn’t raise a man from the dead, you definitely wouldn’t call

01:17

them unsuccessful.

01:18

Quite the contrary.

01:20

The experiment is considered a landmark piece of research indicating that organic life,

01:25

under the right conditions, could have begun inorganically. [Rocks in a puddle and a turtle appears]

01:28

They’d provided a theory for the origin of life, without a single reference to witchcraft

01:33

or ancient aliens.

01:35

That means that B is the correct answer.

01:38

Anyone else craving spaghetti? [Lots of men with forks chasing a spaghetti monster]

Up Next

AP Biology 1.1 Essential Life Process Information
606 Views

AP Biology: Essential Life Process Information Drill 1, Problem 1. If one parent is heterozygous for the sickle cell trait while the other par...

Related Videos

AP Biology 1.1 Evolution Drives the Diversity and Unity of Life
626 Views

AP Biology: Evolution Drives the Diversity and Unity of Life Drill 1, Problem 1. The first cells on planet Earth were likely what?

AP Biology 1.2 Evolution Drives the Diversity and Unity of Life
459 Views

AP® Biology: Evolution Drives the Diversity and Unity of Life Drill 1, Problem 2. What was likely the first genetic material?

AP Biology 1.1 Biological System Interactions
1180 Views

AP Biology: Biological System Interactions Drill 1, Problem 1. Complete the sentence about a saturated fatty acid.

AP Biology 1.1 Free Energy and Molecular Building Blocks
1115 Views

AP Biology: Free Energy and Molecular Building Blocks Drill 1, Problem 1. Which statement incorrectly describes the properties of water?