Structural Organization of the Body Flashcards
Fundamental unit of all living things
Cells
Surrounds and protects the cell; regulates what passes into and out of the cells
Cell Membrane
Controls the operations, the structure and function
Nucleus
rod-like structures
Chromosomes
contains 23 pairs of chromosomes
All cells
contains 23 unpaired chromosomes
Sex cells
regions of DNA
Genes
DNA
deoxyribonucleic acid
regulates its activities according to its sequence
DNA
recipes in codes
DNA sequence
directs the activities of the cell when passed out of the nucleus
DNA sequence
photograph of an individual’s chromosome, arranged by size, shape, and number
karyotype
determine whether chromosomes are normal
karyotyping
puncture of the sac around the fetus for removal of fluid and cells
amniocentesis
shows 47 chromoxomes
down syndrome