(9) Biology- Unit 3 Test
phagocytosis
"Cell eating" when a leukocyte absorbs large molecules such as bacteria
colonial organisms
a collection of similar cells living together
organismal theory
a functioning organism represents life
6CO2 + 12H2O with chlorophyll yields C6H12O6 +6O2
chemical process of photosynthesis
characteristic of DNA
contains coded information
nucleus
control center of the cell
plasma membrane
controls what comes into and goes out of the cell
fact to remember...
current scientific methods can not conclusively distinguish between all microorganisms
leukocyte
disease fighting white blood cell that produces antibodies and performs phagocytosis
cell theory
each cell possesses a life of its own
the four organ systems which are operational in the amoeba
excretion, reproduction, digestion, and respiration
organism
functional plant or animal
where is rRNA produced?
in the nucleus
vacuole
large storage structures
what is the relative concentration of water in a HYPERtonic solution?
low - remember the HYPER is referring to the solute (like salt) so high salt, low water
cell wall
outer covering around plant cell made of fibrous material
plasma membrane
selective gatekeeper of animal cells
fact to remember...
simple cell division between animal and plant cells is NOT the same
nucleolus
small structure(s) within nucleus
cell theory
the cell is the basic unit of life
diffusion
the natural tendency of molecules to move from higher to lower concentration
organismal theory
the organism is the basic unit of life
cellular respiration
the process by which oxygen diffuses passively into the cell, is then converted to carbon dioxide and then the carbon dioxide diffuses passively out of the cell
fact to remember...
the simplest operational cell is still more complex than a computer
fact to memorize.....
the taxonomic classification of all organisms MAY CHANGE based on new discovery
mitochondria
where the Krebs cycle takes place; also known as the "powerplant" of the cell
hypertonic solution
A solution in which the concentration of solutes is greater than that of the cell that resides in the solution - water will flow out of the cell
hypotonic solution
A solution in which the concentration of solutes is less than that of the cell that resides in the solution - water will flow into the cell
cytoplasm
all cellular material outside the nucleus
epidermis
an outer covering of cells
organism
any functional plant or animal with interrelated parts
