Studied by 1 person
The most abundant living elements in living organisms
Carbon
Hydrogen
Nitrogen
Oxygen
Sulfur
Phosphorus
Matter
Any sort of substance that uses up space and has mass
Elements
Unique forms of matter with very specific properties (chemical and physical)
5 elements common to living organisms
Oxygen
Carbon
Hydrogen
Nitrogen
Phosphorus
Atoms
Smallest unit of matter that retains all the chemical properties found of an element
Nucleus
the center of the atom and which contains the protons and neutrons
Outermost
holds its elections in orbit around the nucleus
Ions
when atoms gain or lose electrons
molecules
are formed when two or more atoms join together through chemical bonds to form a unit of matter
Isotopes
are different forms of an element that have the same number of protons but different number of neutrons
Hydrocarbons
are organic molecules that consist entirely of carbon and hydrogen
Biological molecules
Carbohydrates, Lipids, Proteins, Nucleic acids
Carbohydrates
One type of macromolecule
Lipids
a diverse group of compounds such as fats, oil, waxes, phospholipids and steroids (nonpolar in nature)
Nonpolar molecules
are “water-fearing” (hydrophobic) or insoluble in water
Proteins
most abundant organic molecules in living systems
Enzymes
Produced by living cells, speed up biochemical reactions
Nucleic acids
most important macromolecules for continuing life
Deoxyribonucleic acid (DNA)
Genetic material found in all living organisms
Ribonucleic acid (RNA)
Mostly involved in protein synthesis
Population
All individuals of a species living within one specific area
Community
The sum of populations inhabiting the same area
Ecosystem
Consists of all living things in a particular area together with abiotic, non-living parts of that environment
Biosphere
Collection of all ecosystems and represents the zones of life on earth
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