Biology CP 1516Name______Date______Period_____

Origins of Life Activity – How did life arise on Earth?

Part I: Earth’s Early History

1. Read the Excerpt from The Stuff of Life in the folder on your lab table

2. Read page 553 in the Textbook and complete page 1 in the Notes Packet

3. Log onto . Choose “Explore” “Unit 5”  “Chapter 19”  “Lesson 19.3 Earth’s Early History” ”Activities”  “Art Review Earth’s Early History”

4. Label the diagrams by dragging terms onto the image. Click “Submit” to check your answers. Record the correct answers below.

1. 5.

2.6.

3.7.

4.8.

Part II: Abiotic Formation of Organic Molecules-The Miller-Urey Experiment

In the 1950s, Stanley Miller and Harold Urey set out to determine if organic molecules could assemble under early Earth conditions. They filled a container with water and gases that they thought represented the composition of Earth’s early atmosphere. They passed electric sparks through the mixture to simulate lightning. Soon, organic compounds formed. The experiment showed that molecules needed for life could have arisen from simpler compounds. (See textbook page 554)

1. Go to this website:

(

If time permits also watch Video Clip from PBS nova (~11 mins)

2. Watch the animation and answer the Miller-Urey Questions. It will be helpful to periodically pause and restart the animation so you can fully answer each question.

3. Using this information and Textbook page 554 to complete the questions below.

Miller-Urey

Experiment

Here you can see an illustration of the experiment conducted in the 1950’s by Stanley Miller and Harold Urey.

1.What was the purpose of the experiment?

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The apparatus shown here was meant to simulate the conditions of primitive Earth.

2) What does each lettered part in the apparatus above represent?

A - Flask with boiling water ______

B - Flask with Gasses and Electrical connections ______

C - Cold Water collar ______

D - Liquid moving down in inside of the collar ______

E -Water trap______

3) What types of materials were collected in the trap?

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4) What was the conclusion of the experiment?

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5) The above apparatus was called a closed system because it was closed to the air in the lab room. Why was this necessary? ______

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Part III: Geological Time Scale

1. Watch this Video Clip:

(

If time permits also watch History in 3 mins

2. Log onto . Choose “Explore” “Unit 5”  “Chapter 19”  “Lesson 19.1 The Fossil Record” ”Activities”  “Visual Analogy”

3. You will need to pause the video in order to record the important events noted by the dots on the

Video Clip 3 (

Part IV: Sequencing of Events

Watch th

On your table there are 11 pictures which are out of order.

Think about what each cartoon represents and try to put the events in order below the chart.

Letter / Description
A / Trouble in Pangea.
B / O2 factory grand opening.
C / When cosmic dust goes unswept.
D / Plants race animals to land.
E / Homo sapiens and friend in concrete jungle.
F / We want you for the eukaryotic cell.
G / Extended forecast for Earth—40 million years of rain.
H / It was love at first glance—sperm meets egg!
I / “EEEEEEK Mammals!!!
J / Two cells are better than one!
K / Primordial soup.

Use the letter choices above to place the events in order.

First Event:_____

Second Event:_____

Third Event:_____

Fourth Event:_____

Fifth Event:_____

Sixth Event:_____

Seventh Event:_____

Eighth Event:_____

Ninth Event:_____

Tenth Event:_____

Eleventh Event:_____

PART V. ORIGINS HW #1

Read Section 19.3 in your textbook(starting on p. 553) and answer the questions 1-3 from page 558 below.

1a.

1b.

1c.

2a.

2b.

2c.

3a.

3b.
Part VI. The Three Domains

Login to your student account at Click “Explore”. Select Unit 5, then Chapter 18, then Section 18.3 (Building the Tree of Life). Click on the “Activities” tab, then select “Art Review”. Label the diagram on your screen by dragging the terms into the correct positions on the image. Click the ‘Submit’ button to check your work. Keep trying until you get it right.

Once you’ve completed the activity, list your CORRECT answers below.

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2.

3.

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**Need more review? This chart can be found on page 524 of your textbook.**