Chapter 14 Flashcards
What is spontaneous generation
The concept that living things arise from non living things
What was redi’s experiment
Redi This grouped spontaneous generation by placing rotting meat in two containers, one uncovered the other, covered with a piece of screen
Maggot soon appeared in the open container, but not in the covered one. This proved that A living agentThe fly was responsible for formatia maggot on the meat.
What was louis pastia experiment
Lewis disproved spontaneous generation by placing broth in a flask with a curving neck, like an s. This curve allowed air to get to the broth, but not the particles in the air .
What was oparins hypothesis
Oparins Believed that the early atmosphere of the earth contained ammonia, hydrogen gas ,water vapor Add methan. When temperatures, which points wildly over boiling, these gases formed simple organic compounds such as amino acids.
What was millie uri’s experiment
Their apparatas included a chamber containing water vapor methane.
Hydrogen, gas, and ammoni. Electric sparks were used to substitute lightning and caused the gasses to create a chemical reaction that produced organic compounds, including amino acid.
What is radioactive dating
Radioactive dating is a technique used to establish age of materials
It’s done by measuring the amount of meticular radioactive isotope, it contains
What are isotopes
Atoms of the same element that differ in the number of neutrons they contain
What is radioactive decay
One unstable nuclei of isotopes releases particles or active energy.
What is a radioactive isotope
A radioactive isotope is an isotope undergoing.Radioactive decay
What is a half life
A half life is the rate of decay of one half of unradioactive isotope.This decay is caused by rego active decay when isotope have unstable nuclei
Why is the half life of the isotope relevant one dating objects
The half life of the Isotope and the object being dated have to match up. If the isotope is too short, it will not work and vice versa
What is a microsphere
A microsphere is one The cell like structures that were spontaneously Formed in a laboratory from solutions of simple organic chemicals
A microsphere is Spherical in shape and are composed of money, protein molecules are organized as a membrane
What is coacervate
It is the other Cell like structure formed in a laboratory
It is a collection of droplets that are composed of molecules of different types, including linked amino acids and sugars.
Why are the two cell like structures?Not considered cells
They do not respond to natural selection
Explain endosymbiosis
A smaller cell is engulfed by a bigger cell. But instead of being digested, it Lives inside the bigger cell, and they provide a mutually beneficial relationship to each other.
Aerobic prokaryotic small cell
Large prokaryotic
