Biochem Terms Flashcards
function of an Acid
used in the digestive system to break down food
example of an Acid
hydrochloric acid in gastric juice
What are the 5 molecules of life?
carbohydrates, lipids,proteins,nucleic acids, and adenosine triphosphate
how many different lipids are there and what are they?
fatty acids triglycerides (fats and oils) phospholipids steroids (and some vitamins)
Function of carbohydrates?*
quick and short term energy storage
supple multiple materials to build cell structure
Function of lipids?*
supply off energy and make up the outer layer of your cells
Function of fatty acids (lipids)
help generate ATP (energy)
help make phospholipids and triglycerides
Function of triglycerides (lipids)
chemical energy for the body
Function of phospholipids (lipids)
forms cell membrane
Function of steroids (lipids)
maintain metabolism & homeostatsis
Function of proteins? *
Structural: skin, connective tissue Transport: transport O2 (hemoglobin) Regulatory: hormones Immunological: antibodies Contractile: muscle cell contraction Catalytic: enzymes
Function of Nucleic Acids? *
control cell activities
Function of Adenosine Triphosphate (ATP)? *
Energy transferring molecule (power all cell activities)
example of ATP
muscle contraction
function of amino acids
make up muscle and tissue (building block protein), give cells structure and heal wounds
example of amino acid
glutamine, leucine (in the blood)
function of a base?
neutralizes acids
example of a base
blood is slightly basic (pH 7.35-7.45)
function of buffers
maintain pH level in the body by regulating acid-base balance
example of buffers
blood is used as one to maintain a balanced pH level
function of catalyst
speeds up chemical reactions, like digesting food
example of catalyst
enzymes in the intestine
function of diffusion
transport substances, the substance moves from high to low concentration through the plasma membrane
example of diffusion
digested particles of food diffuse in the colon
function of endergonic (endothermic) reaction
abosrbs & stores energy until needed
example of endergonic (endothermic) reaction
Glycolysis, (absorbs energy -> respiration)
function of endocytosis
vesicle detaches from plasma and moves into cytoplasm to fuse with lysosome and its contents are digested
(particles are taken up by enclosure in a plasma membrane sac)
example of endocytosis
monocytes engulf bacteria
function of enzyme
specific molecule that speeds up chemical reactions in cells
example of enzyme
lipase, breaks down lipids
function of exergonic (exothermic) reaction
releases energy so it can be used
example of exergonic (exothermic) reaction
cellular respiration, reaction releases energy that cells use for activities
function of exocytosis
Type of ATP-activated transport, Moves secretions and other substances out of the cell
-product to be released is packaged into the cesicle by the Golgi and the vesicle spills the sac contents OUT OF THE CELL
example of exocytosis
pancreatic cells secrete enzymes
function of facilitated diffusion
diffusion that requires a protein channel/carrier to transport substances through the cell membrane
example of facilitated diffusion (type of diffusion)
glucose molecules go through this to move in and out of cells
function of filtration
driven by blood pressure, causes H2O and small molecules to be filtered
example of filtration
kidneys use filtration to filter waste
function of an inorganic molecule (molecule that DOES NOT contains C)
medium for metabolic reactions, dissolves waste, and maintains body temp
example of an inorganic moloecule
Water, NaCl
function of ions
dissolve in body fluids - electrolytes, which we cannot live without
(this conducts electricity)
example of ions
HCO3- in the blood (gains e-)
function of an organic molecule
construction materials, play vital role in cell function and structure
example of an organic molecule
proteins, carbs, fats (contain C)
function of osmosis
diffusion of water across the plasma membrane to transport and balance, goes through a semi-permeable membrane, not pores
example of osmosis
sweat going through skin
function of passive transport
moves molecules and other substances across membranes w/o energy
example of passive transport
diffusion, (doesn’t require energy)
Function of pH
its a measurement of hydrogen ion concentration in the body, acidic or basic
Example of pH
blood protein levels deep, liver makes more to maintain pH balance
function of phagocytosis
INGESTION OF SOLID PARTICLES
act as scavenger cells that police and protect the body by ingesting bacteria and foreign debris (solid particles)
(type of endocytosis)
example of phagocytosis
white blood cells protect the body by ingesting bacteria and other debris
function of pinocytosis
ENGULFING OF EXTRA-CELLULAR FLUID BY CELLS
routine activity of most cells, cells all in the body “gulp” droplets of extracellular fluid
(type of endocytosis)
example of pinocytosis
Cells forming the lining of the small intestine
uptake of extra cellular fluids like hormones