Characteristics of Life

22 flashcardsby Hannah
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1
homeostasis
process by which organisms maintain a relatively stable internal environment
2
metabolism
All of the chemical reactions that occur within an organism
3
organization of living things
organelles ->cells -> tissues ->organs ->organ systems-> organisms
4
regulation/coordination
the ability to control various activities of an organism to maintain homeostasis - the nervous and endocrine systems work together to accomplish this
5
nutrition
the process of taking in food and using it for energy, growth, and maintenance of homeostasis
6
transport/circulation
movement of material around the cellody
7
synthesis
Combining of small molecules or substances into larger, more complex ones
8
respiration
the metabolic processes whereby certain organisms obtain energy (ATP) from organic moelcules such as glucose/sugar
9
excretion
the process by which metabolic wastes are removed from the body/cell
10
immunity
resistance to disease
11
growth
increase in size of a cell/organism
12
reproduction
process by which organisms produce new organisms of their own kind
13
energy use
energy is needed to maintain organization, grow, and reproduce
14
Endoplasmic Reticulum (ER)
The transportation system of the cell. It moves materials around the cell
15
cytoplasm
A jellylike fluid inside the cell in which the organelles are suspended and helps transport substances throughout the cell
16
Cell membrane (plasma membrane)
encloses the cell, regulates the passage of materials into and out of (including wastes) the cell.
17
autotroph
An organism that makes its own food
18
heterotroph
An organism that cannot make its own food.
19
lysosome
An organelle containing digestive enzymes
20
mitochondria
organelle that is the site of ATP (energy) production
21
vacuole
Cell organelle that stores materials such as water, salts, proteins, and carbohydrates
22
cells
Basic unit of life
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