Chapter 2; Terms Flashcards
(42 cards)
Catabolism
Process whereby complex nutrients are broken down to simpler substances and energy is released.
Cata- means down
bol - means to cast
-ism is a process
Anabolism
Process of building up large proteins from small protein pieces called amino acids.
Ana- means up
bol means to cast
-ism is a process
Cell membrane
Structure surrounding and protecting the cell. It determines what enters and leaves the cell
Chromosomes
Rod-shaped structures in the nucleus that contain regions of DNA called genes. There are 46 chromosomes (23 pairs) in every cell except for the egg and sperm cells, which contain only 23 individual, unpaired chromosomes
Cytoplasm
All the material that is outside the nucleus and yet contained within the cell membrane
DNA
Chemical found within each chromosome. Arranged like a sequence of recipes in a code, it directs the activities of the cell.
Endoplasmic reticulum
Network of canals within the cytoplasm of the cell. Here, larger proteins are made from smaller protein pieces.
Genes
Regions of DNA within each chromosome
Karyotype
Picture of chromosomes in the nucleus of a cell. The chromosomes are arranged in numerical order to determine their number and structure.
Metabolism
Total of the chemical processes in a cell. It includes catabolism and anabolism.
Meta- means change
bol means to cast
-ism means a process
Mitochondria
Structures in the cytoplasm that provide the principal source of energy ( miniature “power plants”) for the cell. Catabolism is the process that occurs in mitochondria. ( from Greek mitos meaning thread, and chondrion meaning granule.)
Nucleus
Control center of the cell. It contains chromosomes and directs the activity of the cell.
Adipose tissue
collection of fat cells.
Cartilage
Flexible connection tissue attached to bones at joints. For example, it surrounds the trachea and forms part of the external ear and nose.
Epithelial cells
Skin cells that cover the outside of the body and line the internal surfaces of organs.
Histologist
Specialist in the study of tissues
Larynx
“Voice box”; located at the upper part of the trachea
Pharynx
Throat. The pharynx serves as the common passage way for food ( from the mouth going to the esophagus) and air ( from the nose to the trachea).
Pituitary gland
Endocrine gland at the base of the brain
Thyroid gland
Endocrine gland that surrounds the trachea in the neck.
Trachea
“Windpipe” ( tube leading from the throat to the bronchial tubes)
Ureter
One of two tubes, each leading from a single kidney to the urinary bladder. Spelling clue; ureter has two e’s and there are two ureters.
Urethra
Tube from the urinary bladder to the outside of the body. Spelling clue: urethra has one e and there is only one urethra
Uterus
The womb. The organ that holds the embryo/ fetus as it develops.