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a number to describe a set of data and its behavior. used for describing a sample of a larger body of information.
the physical features of objects of investigation. they must be measurable in order to be analyzed
a summary chart, showing how frequently each of the various scores in a set of data occurs
when most of the data points are clustered around the mean and fewer occur as distance from the mean increases
the measure, on average, of how much data values differ from the mean set. its the square root of the variance
when a substance begins to climbe the walls of its containor because of its cohesive and adhesive properties
the number of electrons in the outermost electron shell that an atom is willing to donate or take from other atoms
when one side of a molecule posesses a patial posative charge and a partial nagative charge on the other side, due to the greater electronagativity of some atoms in the molecule
groups of atoms that change the characteristics of a molecule. organic molecules are made by adding functional groups to hydrocarbons
the functional groups
hydroxyl, carboxyl, carbonyl (ketone, aldehyde), methyl, amines, phosphates, sulfhydryl
a nucleic acid, the nucliotides of which are made up of ribose sugar, phosphate groups, and a nitrogenous base
a nucleic acid that is used to store genetic information in a cell. DNA is made up of deoxyribose sugar, phosphate group, and a nitrogenous base
a membrane which ahs the ability to let some molecules pass through while excluding others
is used to seperate molesules according to size, has a differentially permeable membrane
organic catalysts that speed up chemical reactions without being used up in the process. composed mostly of proteins
speed up chemical reactions without being used up in the process. lower the amount of activation energy needed for a chemical reaction to start.
the properties of enzymes
1) made up of proteins and have a globular 3-D shape
2) will catalyze only one type of chemical reaction
3) act at normal cell temp
4) not used up in reactions, therefore they are reusable
5) can be inhibited by other chemicals that react with them and cause them to change their shape
things that can cause enzymes to denature
high temperatures (boiling water bath), acidic and basic environments
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