Organism - Is a single, complete individual composed of organ systems.
an organ - Is a structure composed of two or more tissue types that work together to carry out a
particular function.
A tissue - Is a mass of similar cells and cell products that forms
a discrete region of an organ and performs a specific function.
Cells - Are the smallest units of an organism that carry out all
the basic functions of life; nothing simpler than a cell is considered alive.
Cytology - the study of cells and organelles
An organ system - Is a group of organs with a unique collective
function, such as circulation, respiration, or digestion.
Shapes of cells - squamous, cuboidal, columnar
squamous cells - flattened and scale-like(skin cells)
cuboidal cells - cube shaped cells(liver
, columnar cells - tall and column shaped( stomach and intestine cells)
Molecules - two or more atoms joined together
Atom - Smallest particle of an element
Organelle - any of a number of organized or specialized structures within a living cell.( Composed of
molecules.
Anatomical Variation - No two humans are exactly alike
Gross Anatomy - Study of structures that can be seen with the naked eye
The body is composed of only four primary classes of tissue: - epithelial, connective, nervous, and
muscular tissue.
Metabolism - sum of all internal chemical change: anabolism (synthesis) and catabolism (digestion) the
separation of wastes from the tissues and their elimination from the body.
development - is any change in form or function over the lifetime of the organism.(1)differentiation, the
transformation of cells with no specialized function into cells that are committed to a particular task;
and (2) growth, an increase in size. Some nonliving things grow, but not in the way your body does.
Evolution of a population - changes in genes
reproducing - producing copies of themselves; passing genes to offspring
Hemeostasis - maintenance of internal stability
Characteristics of life - organization, metabolism, responsiveness, development, reproduction,
Movement, Cellular composition
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