Characteristics of Life
All life is built of these.
What are cells?
There is strong evidence that these two eukaryotic organelles were originally free-living prokaryotes.
What are mitochondria and chloroplasts?
Current evidence suggests that this organism lived about 4.2 billion years ago.
What is LUCA?
About 2.4 billion years ago the Great Oxygenation Event killed off most of these organisms.
What are anaerobes?
This is the equation for calculating a microscope's field of view.
What is Field Number divided by Total Magnification?
This is the type of reproduction that doesn't require a mate.
What is asexual?
This scientist is credited with popularizing endosymbiotic theory beginning in the 1960s.
Who is Lynn Margulis?
The first prokaryotes used this metabolic process to generate energy for themselves.
What is fermentation?
542 million years ago this "explosive" event occurred.
What is the Cambrian Explosion?
If an organism can maintain balance internally even as the external environment is changing, then it's capable of this.
What is homeostasis?
This endosymbiotic term means "becoming by living together."
What is symbiogenesis?
These monomers can combine to form lipids.
What are fatty acids?
We can see geological evidence of this most-recent mass extinction event in Mexico.
What is the K-Pg mass extinction?
There are many reasons rocks are not considered alive; one reason is they can't respond to this.
What is a stimulus/environment?
One fact that supports endosymbiotic theory is that some organelles have their own DNA in this shape.
What is a circle?
In their experiment, Miller and Urey were able to produce versions of these organic molecules.
What are amino acids?
Hominins have existed on the planet for approximately this many years.
What is 4.4 million?
This process relies on some traits of living organisms being better than other traits at leading to successful reproduction.
What is evolution?
One fact that supports endosymbiotic theory is that some organelles have their own versions of these, the molecular machines responsible for protein synthesis.
What are ribosomes?
Miller and Urey used these four gases to simulate the atmosphere on the early Earth.
What are water, methane, hydrogen, and ammonia?
This is how long it took (approximately) for eukaryotic life to evolve on Earth.
What is 2.8 billion years?