Biology definitions set 1
Terms
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- Biology
- the science that deals with all forms of life, including their classification, physiology, chemistry, and interactions.
- Homeostasis-
- the condition of a stable internal environment in an organism
- Synthesis
- the process of forming a complex compound through a series of one or more chemical reactions involving simpler substances
- Respiration
- the complete chemical and physical process in which oxygen is delivered to tissues or cells of the body and carbon dioxide and water are given off
- Excretion
- removal of waste from an organism body
- Asexual
- single individual produce offspring identical to the parent.
- Sexual reproduction
- two parents and the offspring is not identical to either parent.
- Variable
- Factor that is being tested
- Scientific law
- statement that describes some aspect of a phenomenon that is always true.
- Light microscope
- any device that uses light to produce an enlarged view of an object.
- Magnification
- ratio of the image size to the object size.
- Simple microscope
- magnifying glass
- Compound microscope-
- uses tow lenses. One lens is used to enlarge the image and the 2nd is to further magnify the image.
- Resolution
- ability of microscope to show two points those are close together as separate images.
- Phase-contrast microscope
- special type of compound microscope that allows details within living specimens to be seen without staining.
- Stereomicroscope
- - light microscope used to study surface structure of specimens
- Microdissection-
- tiny instruments used to perform various operations on living cells.
- Chromatography
- any technique that separates different substances from each other on the basis’s of their chemical or physical properties.
- Spectrophotometry
- method of using light to analyze samples.
- Tissue Culture
- Technique of of maintaining live cells or tissues in a medium outside the body
- Electrophoresis
- The technique for separating substances made up of particles that have an electrical charge.