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characteristics of life and microscope
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32
Biology
8th Grade
10/17/2011

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Term
what are the life functions?
Definition
nutrition, transport, respirtation, excretion, regulation, synthesis, growth,reproduction, metabolsism, immunity,locomotion
Term
nutrition
Definition
process by which organism converts inorganic and organic "foods" into more usable form of energy. involves both digestion and indigestion.
Term
autotrophic
Definition
makes their own food
Term
heterotrophic
Definition
does not make their own food
Term
transport
Definition
the movement of materials. (nutrients, essential gasses, wastes, hormones)
Term
growth
Definition
the increse in the size of the cell or an increse in the number of cells.
Term
respiration
Definition
the process that converts energy from food into energy.
Term
aerobic and anerobic
Definition
aerobic needs oxygen and anerobic does not
Term
movement
Definition
actual physical motion. also called locomotion.
Term
reproduction
Definition
the making of more organisms of ones kind. this is not always a sexual event.
Term
synthesis
Definition
the production of more complex substances combining 2 or more simple substances.
Term
metabolism
Definition
the energy level that an individual organism must maintain to stay alive.
Term
excretion
Definition
the release of waste products into the transport system for the removal of the organism.
Term
immunity
Definition
the ability to defend yourself against diseases.
Term
regulation
Definition
maintiains a state of homeostasis in the body. any activity an organism does to try and maintain its interval enviorment.
Term
stimulus
Definition
a change in the enviorment. a physical response from the organsim
Term
resolution
Definition
the ability to show details more clearly
Term
compound light microscope
Definition
must be very thin, there is a pair of lenses called the ocular and the objective. magnification is determined by multipling both lenses.
Term
total magnification
Definition
to calcualte multiply the objective lense by the ocular lense.
Term
disecting microscope
Definition
used to magnify 3D objects. objects appear rightside up and normal. only one objective lense and very low power.
Term
electron microscope
Definition
uses a beam of electrons. only noniving samples.
Term
cell cultures
Definition
group of cells grown in a nutrient solution from a single original cell. can be used to see cell responses and differences between cells.
Term
cell fractionation
Definition
used to seperate cell parts.
Term
eye piece
Definition
magnifies image
Term
coarse adjustment knob
Definition
used for rough focus
Term
fine adjustment knob
Definition
used for sharper focus
Term
high power objective
Definition
longer structure, enlarges image
Term
arm
Definition
used ot hold the microscope by
Term
stage
Definition
place you put the specimens on
Term
mirror
Definition
light source
Term
base
Definition
supports the microscope
Term
formula to find the field diamerter
Definition
LP objective/HP objective = HP diamteter/ LP diameter
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