THE CELL Flashcards
Smallest unit, capable of performing life functions.
CELL
Structural and functional unit of all living organisms.
CELL
Building blocks of life
CEL
Vital functions of an organisms occur within cells.
CELL
All cells contain hereditary information necessary
for __________ cell functions and for transmitting
necessary _________ to the next cell generation.
regulating; information
TWO TYPES OF CELLS
. PROKARYOTIC; EUKARYOTIC
Do not have structures surrounded by
membranes
PROKARYOTIC
Bacteria, Archae
PROKARYOTIC
Contain organelles surrounded by membranes.
EUKARYOTIC
Multicellular organisms such as plants and
animal cell.
EUKARYOTIC
things present in the eukaryotes but not present in prokaryotes
- definite nucleus
- mitochondria
- endoplasmic reticulum
- chloroplasts
Barrier between inside and outside of the
cell; Controls entry of materials: transport, Receives chemical and mechanical signals
Receives chemical and mechanical signals
PLASMA / CELL MEMBRANE
When two cells are right next to each other,
their cell membranes may actually be touching
GAP JUNCTION
They physically connect cells like the gap
junction, but no opening is created.
DESMOSOME
Happens when two membranes actually bond
into one.
`TIGHT JUNCTION
Within cells: 2/3 of total
INTRACELLULAR (ICF)
EXTRACELLULAR (ECF)
Between cells
= Interstitial
EXTRACELLULAR (ECF)
In blood vessels
Plasma
EXTRACELLULAR (ECF)
In lymphatic vessels
Lymphatic
the liquid doing the dissolving (usually water).
SOLVENT
the dissolved material (particles or gas)
SOLUTE
Amount of solute in a given amount of solvent.
CONCENTRATION
Difference in concentration between 2 areas of
solution.
CONCETRATION GRADIENT
TWO (2) TYPES OF TRANSPORT
PASSIVE
ACTIVE
- Diffusion (simple and facilitated)
- Osmosis
PASSIVE
- Endocytosis
- Exocytosis
ACTIVE
the process by which molecules spread
from areas of high concentration to areas
of low concentration.
PASSIVE TRANSPORT: SIMPLE DIFFUSION
