Bio 123

Created by jmckinney1982 

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Darwin

naturalist, explored south America and Africa for 5 yrs

Lyell

slow genetic change

Curier

palaeontology, study of fossils

Malthus

population increases faster than food supply

Lamarack

thought the individual organism could change

Wallace

also formulated natural selection theory

evidence of natural selection 1

anatomical and embryological evidence

evidence of natural selection 2

biogeography

evidence of natural selection 3

fossil record

evidence of natural selection 4

molecular evidence

ionic bonds

type of chemical bond formed through an electrostatic attraction between two oppositely charged ions

covalent bonds

forces that hold an atom together

hydrogen bonds

is the attractive interaction of a hydrogen atom with an electronegative atom, such as nitrogen, oxygen or fluorine, that comes from another molecule or chemical group

isotope

atoms of an element that have a different number of nuetrons

uses of isotopes

radioactive isotopes for medicine (iodine for example)

importance of carbon

allows to have a complex structure

lipids

provide energy storage

carbohydrates

energy sources and structural components

proteins

important for structure, 50% of dry weight of cells

nucleic acid

biological molecules essential for life, and include DNA (deoxyribonucleic acid) and RNA (ribonucleic acid)

example of lipids

fat

example of carbohydrates

polysaccharide

examples of proteins

polypeptide

example of nucleic acids

dna, rna

subunits of lipds

monosaccaride

subunits of lipids

glycerol, fatty acids

subunits of proteins

amino acids

subunits of nucleic acids

nucleotide

starch

storage of carbohydrates

glycogen

primary short term energy storage in human

cellulose

structural part of plants

chitin

structure in animals and fungi

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