Solutions
Save
Terms in this set (89)
organ systems are organs
composed of
organs are composed of tissues
tissues are composed of cells
cells are composed in part of organelles
organelles are composed molecules
of
molecules are composed atoms
of
when an egg gets fertilized by a sperm it becomes a
single fertilized cell called a zygote
what is a zygote?
this process is called CONCEPTION
the zygote
it divides and multiplies into trillions of cells, which
what is the origin of every
become the basic unit of every tissue and organ.
cell in our bodies?
These cells are responsible for the structure and all the
functions of your tissues and organs.
study of cell structure and function and this forms the
what is cytology? basis of the knowledge of the anatomy and physiology
of every tissue & organ.
latin: something received
what is conception?
fertilization of the egg by sperm to form a zygote
, greek: indivisible
what is an atom?
a small unit of matter
latin: storeroom
what is a cell?
smallest unit of the body capable of independent
existence
every cell it creates becomes a complex a little factory
that carries out these basic life functions:
1) MANUFACTURE of proteins & lipids
what happens as a zygote 2) PRODUCTION and use of energy
divides?
3) COMMUNICATION with other cells
4) REPLICATION of deoxyribonucleic acid DNA
5) REPRODUCTION of itself
its a clear gelatinous substance containing different
what is the cytoplasm?
organelles
small structures in the cytoplasm of the cell that carry
what are organelles? out special metabolic tasks (the chemical processes that
occur in the cell)
this is the largest organelle
it is surrounded by its own membrane and directs all the
what is the nucleus? cell's activities.
The 46 molecules of DNA in the nucleus form 46
chromosomes
a small dense body composed of RNA and protein
found in the nucleus. It is invovled in the manufacture of
what is a nucleolus?
proteins from simple materials-a process called
anabolism.
what does the they produce energy by breaking down compounds like
mitochondria do glucose and fat in process called catabolism