The Origin of Life
A scientist who made buildlng blocks of life.
Who is Stanley Miller?
The pure substance that cannot be separated into simpler substances.
What is an element?
Source of energy necessary to sustain life.
What is the sun?
When two or more elements are chemically joined together,
What is a compound?
The element that without it, metabolism would come to a grinding halt.
What is water?
It was formed 4.6 billion years ago.
When was the earth formed?
Along with hydrogen, nitrogen, and oxygen, it is one of the basic elements of life.
What is carbon?
Along with water, it is an essential need for all living things.
What is food?
Compounds that may or may not contain the element "carbon."
What are inorganic compounds?
Animals that maintain a constant body temperature.
What are warmblooded animals?
The "soup" containing the substances needed for life.
What are our oceans?
The theory that life could spring from nonliving matter.
What is spontanerous generation?
The process in which simple food substances, such as glucose, are broken down and the energy they contain is released.
What is respiration?
These compounds refer to life.
What are organic compounds?
DNA or RNA.
What are nucleic acids?
Proteins, carbohydrates, alcohol and fatty substances called lipids.
What are some of the chemicals scientists thought may have been in the original "soup".
All living things are made of small units.
What are cells?
When organisms use this they produce a waste product called carbon dioxide.
What is oxygen?
A compound made of sodium or chlorine.
What is salt?
Some activity or movement of an organism brought on by a stimulus.
What is a response?
A waste material of this process is oxygen.
What is photosynthesis?
The sum total of all the chemical reactions that occur in living things.
What is metabolism?
The ability of an organism to keep conditions inside its body the same, even though conditions in its external environment change.
What is homeostasis?
This source of energy breaks down, in the body, into a simple sugar called glucose.
What are carbohydrates?
Two conflicting theories; one says that these came from shallow pools and the other beds of clay.
How are cells formed?
Each new cell is an exact copy of the original cell.
What is asexual reproduction?
Any change in the environment, or surroundings, of an organism.
What is a stimulus?
Animals such as reptiles and fishes have body temperatures that can change with their environment temperatures.
What are coldblooded animals?
A nucleic acid that carries messages about an organism that is passed from parent to offspring.
What is DNA?
Substance, made up of amino acids, used to build and repair cells.
What are proteins?