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Bio 140
Lab 2
31
Biology
Undergraduate 1
02/01/2012

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Term

Nucleus

Definition
control center & necessary for cell reproduction
Term
nuclear membrane
Definition
porous bilayer that surrounds nucleus
Term
secretory vesicle
Definition
distributes materials out of cell
Term
microvilli
Definition
increases surface area
Term
smooth endoplasmic reticulum
Definition
lipid synthesis, drug detoxification
Term
golgi apparatus
Definition

packaging and processing center

for proteins and lipids

Term
mitochondria
Definition
produces ATP
Term
nucleolus
Definition
produces ribosomes
Term
plasma/cell membrane
Definition

selective barrier,

encloses cytoplasm

Term
cytoplasm
Definition
gives cell shape and hold organelles in place
Term
ribosomes
Definition
produces proteins
Term
rough endoplasmic reticulum
Definition
site of protein synthesis
Term
cilia
Definition
move materials across surface
Term
cytoskeleton
Definition

provides support,

holds organelles in place,

enables cell to change shape

Term
microtubules
Definition

provide structural support,

form cilia and flagella

Term
intermediate filaments
Definition
maintain cell shape
Term
microfilaments
Definition
involved in cell movement
Term
the 3 parts that cells contain
Definition
nulceus, plasma membrane, cytoplasm
Term
cell
Definition
structural & functional unit of all living things
Term

what did biologists gain by the

invention of the microscope?

Definition
a valuable tool to observe and study structures that are too small to be seen by the naked eye
Term
rule for transporting a microscope
Definition

hold with one hand on arm,

the other under the base

Term
rule for cleaning a microscope
Definition
use special lens paper to clean lenses only
Term
rule for using the microscope
Definition

never use the coarse adjustment

knob with the high power objective

lens in position

Term
stage
Definition
the platform the slide rests on
Term
condenser
Definition
concentrates the light on the specimen
Term
iris diaphragm lever
Definition
arm attached to the condenser that regulates the amount of light 
Term
coarse adjustment
Definition
used to focus on the specimen
Term
fine adjustment
Definition
used for precise focusing
Term
objective lenses
Definition
adjustable lens system
Term
as the magnification is increased, the amount of light needed is ____.
Definition
increased
Term
parfocal
Definition

the ability to change magnification while

staying in focus

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