Lecture 8 - Week 4 - Origin of Life & Fossils Flashcards
1
Q
How does NASA define life?
A
“A chemical system that sustains itself by
self-catalysis and is capable of undergoing Darwinian evolution”
2
Q
Some molecules that would have been needed for Life to form were…
A
Carbohydrates, Lipids, Amino Acids, and Nuleic Acids
3
Q
Some ways that these components could have arisen were…
A
Hydrothermal vents, put on Earth by meteorites, lightening.
4
Q
What is a prokaryote simple definition?
A
Prokaryotes are organisms whose cells lack a nucleus and other organelles. Prokaryotes are divided into two distinct groups: the bacteria and the archaea.
5
Q
What is a eukaryote?
A
Endosymbiosis
6
Q
Eukaryotes likely got their organelles by “ingesting” a prokaryote and starting a symbiotic relationship with it/them. This is known as…
A
Endosymbiosis
