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Lecture 2

NUTR 120 Lecture Notes - Lecture 2: Sucrase, Anabolism, Long Term Ecological Research Network

Course Code
NUTR 120
Bodo, Mackenzie

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chemistry and physiology
study of composition and characteristics of matter
human physiology
study of how human body functions
humans are made up of chemicals, mostly organized into cells
matter is made up of atoms that contain:
-protons: positively charged particles in the nucleus
-electrons: negatively charged particles that surround the nucleus in a “cloud”
electrically charged atom or group of atoms
-form when the atom of group of atoms gains or loses 1 or more electrons
negative charge: gain of an electron
positive charge: loss of an electron
there are over 100 types of atoms, and each is an element
-cannot be separated into simpler substances
-building blocks of matter
there are elements in the body (i.e. hydrogen, oxygen, carbon, nitrogen, calcium, sulfur,
copper, manganese, selenium, etc)
matter that forms when 2 or more atoms interact and are held together by a chemical
chemical bond
attraction that holds atoms together to form a molecule
i.e. some atoms form single bonds such a hydrogen (carbon atoms may form single,
double, or triple bonds)
molecule that contains 2 or more different elements
evenly distributed mixture of 2 or more compounds
-the two compounds in a solution are
solvent: the primary component
solute: lesser component that is dissolved into solvent
how easily a substance dissolves into a liquid
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