What is the difference between anatomy and physiology - ANSWER anatomy- study
of structure
physiology- study of function
what are the levels of organization - ANSWER subatomic particle- protons,
electrons, neutrons
atom
molecule
macromolecule
organelle
cell
tissue
organ
organ system
organism
what are the characteristics of life? - ANSWER movement
responsiveness
respiration
absorption
secretion
digestion
assimilation- changing of absorbed substances into chemically different forms
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,circulation
reproduction
growth
what are the requirements of life? - ANSWER water
food
heat
pressure
oxygen
define homeostasis - ANSWER maintaining of a stable enviroment
what is a homeostatic mechanism - ANSWER monitors aspects of internal
environment and corrects as needed
*negative feedback mechanism
define matter - ANSWER anything that takes up space and has mass
element - ANSWER composed of chemically identical atoms
atom - ANSWER smallest particle of atom, basic unit of matter
what are structure of an atom - ANSWER nucleus
protons
neutron
electrons
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, define nucleus, proton, electron, neutron - ANSWER nucleus- central part of atom
proton- positive charge
electron- negative charge
neutron- no electrical charge
ionic bond - ANSWER formed when electrons are transferred from one atom to
another
what are covalent bonds - ANSWER when two molecules share electron
hydrogen bond - ANSWER formed between water molecule, attraction between
positive end of polar molecule and negative end of another polar molecule
define synthesis, decomposition, and exchange reactions - ANSWER Synthesis-
A+B=AB
Decomposition- AB=A+B
exchange- AB+CD=AD+BC
define reactant - ANSWER starting materials of reactions
product - ANSWER ending material
define catalyst - ANSWER a substance that speeds up a chemical reaction
what is an acid - ANSWER dissociates with water
base - ANSWER combines in water
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