(9) Biology- Unit 3 Test

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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


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