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Glossary of Villanova Biology

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Metabolism
The sum total of all the chemical reactions that occur
Anabolism
Simple molecules converted into complex molecules (energy input) i.e. photosynthesis
Catabolism
complex molecules converted into simple molecules (energy output) i.e. cellular respiration
Asexual reproduction
one parent. regeneration, aquatic environment ex. planeria
Secual reproduction
male and female parents produce offspring that are genetically similar; terrestrial environment; produces genetic variability
growth
increase in the number or size of cells
Homeostasis
maintain a constant internal environment. ex. temperant regulation
cell
smallest unit for both structure and function of living things; anything smaller is not alive
cell wall
in plants, provides rigidity and support; permeable
cellulose
in plants; compex carb in the cell wall that adds to the support
cell membrane
in both plants and animals; semi-permeable; protective boundary
osmosis
movement of water acrose semi-permeable membrane
isotonic condition
water concentration the same inside and out.
hypertonic
water moves outside to lower concentration
hypotonic
water diffuses into the cell which then swell up

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