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32 Cards in this Set
- Front
- Back
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life's hierarchy of organization
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molecule: DNA
organelle: nucleus cell: nerve cell tissue: nervous tissue organ: brain organ system: nervous system organism: ring-tailed lemur population: group of ring tailed lemurs community: all organisms in the forest ecosystem: forest in Madagascar biosphere |
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consumers, producers, decomposers
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comsumers: animals
producers: plants decomposers: in soil |
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common features of all forms of life
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order
reproduction Growth and Development Energy Processing response to the environment regulation evolutionary adaptation |
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3 domains of life
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Bacteria: prokaryotic cells
Archaea: prokaryotic cells Eukarya: eukaryotic cells; kingdom: protist, plantae, fungi, animalia |
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Evolution: core of biology
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the basis of adaption
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2 main points Darwin articulated in the origin of species
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1. large amount of evidence to support idea of evolution.
2. natural selection:individuals with certain inherited traits are more likely to survive and reproduce than those whom do not |
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case study
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observation
question hypothesis prediction experiment |
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matter
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living organisms and everything around them
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element
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a substance that cannot be broken down to other substances by ordinary chemical means
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compound
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a substance consisting of of two or more different elements in one fixed ratio.
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for most abundant elements
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oxygen
carbon hydrogen nitrogen |
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goiter
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an iodine deficiencythat cause the thyroid gland to grow at abnormal size
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atom
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proton, neutron, electron
proton + neutron : mass number # of protons : atomic # |
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covalent bond
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2 atoms share one or more pairs of outer shell electrons
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molecule
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two or more atoms held together by covalent bonds
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ionic bond
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2 ions with opposite charges attract eachother and hold
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hydrogen bond
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the positively charged region of the bond is hydrogen
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cohesion
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tendency of molecules of the same kind to stick together
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surface tension
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a measure of how difficult it is to stretch or break the surface of liquid
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heat
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the amount of energy associated with movement
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temperature
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measures intensity of heat
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evaporative cooling
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the molecules with the greatest energy leave
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why is water a a good solvent
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the polarity of its molecules
opposite attracts |
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acid
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compound that donates hydrogen ions to solution
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base
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accepts hydrogen ions and removes them from a solution
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organic compounds
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carbon completes its outer shell by sharing electrons with other atoms in four covalent bonds
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hyrocarbon
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only composed of carbon and hydrogen
fuel to your body |
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phosphate group
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consist of phosphorus atom bonded to 4 oxygen atoms usually ionized and attached to the carbon skeleton
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hydroxyl group
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hydrogen atom bonded to oxygen
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carbonyl
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carbon linked by a double bond to oxygen
end of skeleton carbon is aperture within chain is ketone |
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carboxyl
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carbon double bonded to an oxygen
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amino
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nitrogen bonded to 2 hydrogens and the carbon skeleton
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