Chemistry Test 5 Flashcards
highly specialized type of protein…
enzymes
enzymes function primarily as ________
organic catalysts
agents which may alter chemical reactions without itself being permanently changed.
catalyst
naming of enzymes
nomeclature
compound or type of compound upon which an enzyme works
substrate
most enzymes are named by adding ______ to the root of the name of the ___________
ASE
Substrate
two general classes of enzymes
- proteases
2. lipasses
enzymes which breakdown proteins
proteases
enzymes which breakdown lipids
lipases
those enzymes catalyzing the decomposition of human remains generally are ___________ & __________ in nature…
Proteolytic & Hydrolytic
dissolves protein
proteolytic
mediate hydrolysis reaction
hydrolytic
two distinct sources of putrefactive catalysts
- saprophytic bacteria
2. lysosomes
a unique characteristic of lysosomes
autolysis
self-cell digestion (a unique characteristic of lysosomes’s ability to digest surrounding cellular substances) is referred to as…
autolysis
carbohydrates are composed of ______, ______, and _________
carbon
hydrogen
oxygen
carbohydrates are structurally ______ and ______ derivatives of _____ alcohols
aldehyde
ketone
polyhydroxy
carbohydrates will have at least ______ OH groups since they are polyhydroxy alcohols.
4
note…
This definition has 3 important aspects: Carbs
1) It designates what elements are present in carbohydrates.
2) It indicates to expect either the aldehyde or keytone group.
3) It indicates the alcohol’s functional group is present. ( OH Hydroxy)
carbohydrates are classified into what 3 groups?
- monosaccharides
- disaccharides
- Polysaccharides
simple sugars which cannot be hydrolyzed into smaller carbohydrate molecules.
monosaccharides
examples of monosaccharides
Glucose
Fructose
Hexose
any substance ending in OSE is a…
sugar
normal sugar of blood, it should be present in blood
glucose
molecular formula for glucouse
C6H12O6
glucose is a….
hexose & aldose
fruit sugar…a sugar derived from ketones.
fructose
fructose is a….
Hexose & Ketose
glucose and fructose occur…
freely in nature
sugar derived from alcohol
aldose
results from a reaction between the aldehyde or ketone functional group and an alcohol functional group within one sugar molecule
ketose
or aldose
Monosaccharides by name that are based on the number of carbons.
Triose Tetrose Pentrose Hexose Heptose
Tetrose contains how many carbons?
4
heptose contains how many carbons?
7
triose contains how many carbons
3
hexose contains how many carbons?
6
pentrose contains how many carbons?
5
carbohydrates that can be hydrolyzed into 2 monosaccharides. Formed when 2 monosaccharides combine by splitting a molecule of water.
dissacharides
3 major dissaccharides
- lactose
- maltose
- sucrose
malt sugar…
maltose
table sugar
sucrose
milk sugar
lactose
sugar found in germinating grains
maltose
type of sugar that derives from sugar cane/sugar beets
sucrose
the basis for lactic acid in milk
lactose
those carbohydrates which yield many (3 or more) monosaccharides upon hydrolysis.
Polysaccharides
examples of Polysaccharides
- starch
- glycogen (stored form of gylcose)
- cellulose
breakdown of a compound into simpler units by addition of the components of water.
hydrolysis
monosaccharides DO NOT undergo…
hydrolysis
disaccharides upon hydrolysis form
monosaccharides
polysaccharides are first hydrolysis into ____________ then complete hydrolysis to yield _____________ which do not undergo hydrolysis
disaccharides
monosaccharides
process by which carbohydrates decompose by enzymes is called….
fermentation
study of compounds produced by living organisms
biochemistry
biochemical compounds of major importance. Organic compound containing carbon, hydrogen, oxygen, nitrogen, sulfur, and sometimes phosphorus (P) and iron (Fe) and polymers of amino acids
proteins
compounds which contain two functional groups, the carboxyl group (COOH) and the Amino group (NH2).
amino acids
all amino acids have both the _______ group and the _____ group. Therefore, they too, may act as both ____ and ____.
carboxyl
amino
acids
bases
properties of amino acids
- amphoteric
2. buffers
ability of any substance or any compound that can act as an acid or base.
amphoteric
group of chemicals who’s purpose was to insure that regardless of what the pH was out of the body at the time of embalming, the pH will not adversely affect the embalming operation.
buffers
Any compounds that protects a solution against changes in pH
buffers
borax is a _____ used in embalming fluid
buffer
amino acids are joined together by ______________
peptide linkage
chain of amino acids joined together by peptide linkage
protein
glycine and alanine can be joined to each other by the elimination of one molecule of water to form a _____________
dipeptide
formed by joining two amino acids together.
dipeptide
the embalming process is nothing more than a series of __________ or ___________ to one another.
temporary bonds
temporary cross-linking
Cross-linking results in the firmness of embalmed tissues and the most commonly used agent for this reaction is, of course, ____________
formaldehyde
decomposition of proteins either in putrefaction or decay
proteolysis
anaerobic decomposition of proteins brought about by the action of enzymes is called______________
putrefaction
putrefaction occurs faster than ______
decay
absorption of the liquid portion of blood by the surrounding tissue following death.
imbibition
decomposition of proteins by enzymes of aerobic bacteria
decay
the 3 major chemical reactions involved in putrefaction
- hydrolysis
- deamination
- decarboxylation
removal of the amino group from the amino acid; formaldehyde reacts with ammonia to produce Utropin.
deamination
urotropin is also known as…
hexamathylene tetraamine
the removal of the carboxyl group from an amino acid to yield carbon dioxide water and an amine.
decarboxylation
5 Final decomposition products are:
- hydrocarbons
- organic acids
- amines NH2 and ammonia NH3
- carbon dioxide
- hydrogen sulfide- Sulfur
all encompassing term for fats and oils
lipids
function as the insulating layer of the body. (structural component in cell membranes and as storage as energy)
lipids
properties of lipids
- soluble in organic solvents
- same elements present as do sugars or carbs. (carbon, hydrogen, & oxygen)
- insoluble in water
the __________ of lipids distinguishes them from carbohydrates
insolubility
fats are ______ or __________ at room temperature and contains a high percentage of ____________ fatty acids
solid
semi-solid
saturated
oils are ________ at room temperature and contains a high percentage of __________ fatty acids
liquid
unsaturated
compounds who’s products of hydrolysis are fatty acids and alcohols
simple lipids
types of decomposition only associated with FATS
- adipocere
2. saponification
adipocere is…
grave wax
saponification is…
soap making
whether lipids is a fat or an oil depends on its ______________
physical state
physical properties of lipids
- solubility & emulsification
2. Physical state (solid & liquid)
act of mixing two insoluble liquids
emulsification
measure of how well two substances mix
solubility
chemical changes of lipids
- final products of hydrolysis
2. saponification
only associated with fats. A chemical property of lipids is when fatty acids or oils are boiled which is a process called….
saponification (soap making)
reaction between a fatty acid and strong base which produces glycerol and salt of a fatty acid
saponification
although the products of saponification are technically salts, commonly they are referred to as _______
soap
one of the interesting compounds to the embalmer associated with lipids is ___________
adipocere (grave wax)
white waxy material produced by saponification of body fat
adipocere
products of saponification
soap & glycerine
adipocere
if a body is buried in ________ adipocere can be produced over a period of time.
alkaline soil
lipids formed from combo of unsaturated and/or saturated fatty acids with high molecular weight alcohols, other than glycerol
waxes
examples of waxes….
beeswax, carnuba, lanolin
a common name for any fat/oil is….
triglyceride
another way to define fats and oils….
esters of fatty acids and glycerol
those products of hydrolysis which result in fatty acids, an alcohol and other compounds
compound lipids
3 compound lipids…
- glycolipids
- sphingolipids
- phosolipids
various steroids such as cholesterol hormones
miscellaneous lipids
miscellaneous lipids are also called…
derived lipids
3 miscellaneous lipids
- terpenes
- steroids
- cholesterol
types of terpenes
menthol
rubber
3 types of cholesterol
- HDL
- LDL
- VLDL
HDL stands for…
good cholesterol
HIGH DENSITY LIPOPROTEIN
LDL stands for…
bad cholesterol
LOW DENSITY LIPOPROTEIN
VLDL stands for
Very Low Density Lipoprotein
D stands for
density
L stands for
lipid
its carbonyl group is attached to an END carbon
aldehyde
its carbonyl group is attached to a NON END carbon
ketone