
Life's Beginning on Earth
Flashcard
•
Biology
•
12th Grade
•
Practice Problem
•
Hard
RT - 12ZZ 982542 John Fraser SS
FREE Resource
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24 questions
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1.
FLASHCARD QUESTION
Front
What is the first step necessary for life to emerge on Earth?
Back
Abiotic synthesis of amino acids and nucleic acids.
2.
FLASHCARD QUESTION
Front
Which molecules evolved first, RNA or DNA?
Back
RNA molecules evolved first; they are less stable than DNA.
3.
FLASHCARD QUESTION
Front
What is the significance of RNA in early life forms?
Back
RNA is essential for storing, retrieving, and conveying molecular information to construct components of cells.
4.
FLASHCARD QUESTION
Front
What experiment supports the abiotic synthesis of organic molecules?
Back
The Stanley Miller & Harold Urey experiment.
5.
FLASHCARD QUESTION
Front
What did the Miller-Urey experiment demonstrate?
Back
It demonstrated that amino acids and other organic compounds can form naturally under conditions simulating early Earth.
6.
FLASHCARD QUESTION
Front
What is the second step necessary for life to emerge on Earth?
Back
Monomers must join to form more complex polymers using energy from the environment.
7.
FLASHCARD QUESTION
Front
What are examples of complex polymers formed from monomers?
Back
Monosaccharides form polysaccharides, phospholipids form cell membranes, RNA synthesizes proteins from amino acids, and chromosomes are created from DNA.
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