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2)A polar molecule is when A polar molecule results from an unequal distribution of charge. When some molecules form covalent bonds, they do not share electrons equally, which causes one end of the molecule to be positively charged and the other end to be negatively charged.
*3)Hydrogen bonds and covalent bonds-Hydrogen bonds are weak attractions between a hydrogen atom of one molecule and another atom that has a partial or full negative charge. Covalent bonds are formed when two atoms share pairs of electrons.
4)the properties of waters hydrogen bonds are floats in ice form, is resistant to temperature change
5)the properties of waters polarity is able to cohere or adhere to other water molecules
CARBS
functions- provides energy for cells and provides structural support for cell walls in plant
food- (simple)candy, honey, (complex)corn, potatoes, beans, some fruits, breads, pasta
LIPIDS
functions- long term energy storage, makeup cell membranes, act as water barrier, act as chemical signals (hormones) in body
food-oil and butter,animal fats (meat/fish),eggs,nuts
PROTEINS
functions- regulate process in cell, regulate cell processes
food- meat, eggs, beans, seeds
NUCLEIC ACIDS
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