Key Terms
- buffer
- substance that resists a change in pH by absorbing or releasing hydrogen or hydroxide ions
- cell membrane
- the semipermeable membrane surrounding the cytoplasm of a cell
- cell wall
- rigid cell covering comprised of various molecules that protects the cell, provides structural support, and gives shape to the cell
- chemical reactions
- a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction
- dish soap and salt
- any chemical compound formed from the reaction of an acid with a base, with all or part of the hydrogen of the acid replaced by a metal or other cation
- DNA extraction
- a method to purify DNA by using physical and/or chemical methods from a sample separating DNA from cell membranes, proteins, and other cellular components
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- extraction buffer
- a buffer solution used for the purpose of breaking open cells for use in molecular biology experiments that analyze the compounds of the cells
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- hydrophilic
- having a tendency to mix with, dissolve in, or be wetted by water
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- nuclear membrane
- is made up of two lipid bilayer membranes that in eukaryotic cells surround the nucleus, which encloses the genetic material. The nuclear envelope consists of two lipid bilayer membranes: an inner nuclear membrane and an outer nuclear membrane
- phospholipid bilayer
- a two-layered arrangement of phosphate and lipid molecules that form a cell membrane, the hydrophobic lipid ends facing inward and the hydrophilic phosphate ends facing outward
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- precipitation reaction
- precipitation is the process of transforming a dissolved substance into an insoluble solid from a super-saturated solution. The solid formed is called the precipitate
- solubility
- the ability to be dissolved, especially in water
