Reading Quiz

1. What does abiotic mean?2. What are the two types of nucleic acids?3. Amino acids are the “building blocks” of

which polymer?4. Ribozymes are pieces of RNA that can

act as ______________.

AP Biology

Life’s Beginnings on Earth according to science

Nucleic Acid Formation

Amino Acid Formation

Protein’s Natural Form

Monosaccharides Combining

Phospholipid Formation

Construction of mRNA from DNA

Constructing Chromosomes

DNA Replicating

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Hydrophilichead

Hydrophobictail

WATER

WATER

Membrane Formation

Representation of a Protobionts

Stanley Miller

LE 26-2

Water vaporCH4

NH3 H 2

Electrode

Condenser

Coldwater

Cooled watercontainingorganicmolecules

Sample forchemical analysis

H2O

Early Earth

Energy Source

• In no more than 3 sentences, explain why the abiotic synthesis of the nucleic acids RNA and DNA was overall so essential to helping generate life on Earth.