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Gen. Science Mod 9

The Study of Life

TermDefinition
1st criteria for life All life forms contain deoxyribonucleic acid, which is called DNA.
2nd criteria for life All life forms have a method by which they extract energy from the surroundings and convert it into energy that sustains them.
3rd criteria for life All life forms can sense changes in their surroundings and respond to those changes.
4th criteria for All life forms reproduce.
Atom The smallest chemical unit of matter.
Molecule Two or more atoms linked together to make a substance with unique properties.
Metabolism The sum total of all processes in an organism that convert energy and matter from outside sources and use that energy and matter to sustain the organism's life functions.
Receptors Special structures that allow living organisms to sense the conditions of their internal or external environment.
Precocial A term used to describe offspring that are born able to hear, see, move about, regulate body temperature, and eliminate waste without a parent's help.
Altricial A term used to describe offspring that are born without at least one of the following abilities: hear, see, move about, regulate body temperature, or eliminate waste.
Cell The smallest unit of life in creation.
Nucleotides The little units attached to each strand in the DNA molecule.
Glucose The name of the chemical that plants make for food and is considered an energy source.
Starch A complex carbohydrate that is stored and used as food/energy for plants and animals.
Photosynthesis The process by which green plants and some other organisms use the energy of sunlight and simple chemicals to produce their own food.
Nucleus The structure in a cell that contains the DNA.
Biosphere A living system that is isolated from its surroundings and its contents continue to live and grow.
Created by: vernahale
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