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
- also known as the nuclear membrane, is made up of two lipid bilayer membranes that in eukaryotic cells surrounds 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
