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Chapter 11 Energy Metabolism: Respiration (Types of Respiration (Aerobic…
Chapter 11 Energy Metabolism: Respiration
Types of Respiration
Definition
breaks down molecules to make ATP
Aerobic
Oxygen is the electron acceptor
oxygen eliminates the problem using pyruvate
Electron transport chain
Uses NADH
NADH Shuttle
crosses mitocohndrial matrix
new NADH molecules are powered
passes electrons through flavin mononucleotide
returns NAD+ to citric acid cycle
Plants and animals are strict aerobes
Glycolysis
#
Same in anerobic
continuous with oxygen available
Citric Acid Cycle
uses the pyruvate from glycolysis'
same glycolysis performed
aka Krebs cycle
aka tricarboxylic acid cycle
the process
pyruvate
CO2 and NADH produced
Acetyl
Attaches to carrier molecule
Coenzyme A
forms Acetyl CoA
transfers to a 4 carbon
forms citrate
1 more item...
called oxaloacetate
produces little ATP and many NADHs
Anaerobic
Respiration done without oxygen
Also called fermentation
fermentation is done to make ethanol
bacteria are obligate anaerobes
faculative organisms
Glycolysis
reverse of gluconegenesis
Process of Glycolysis
Glucose
glucose 6-phosphate
fructose-6-phosphate
fructose-1,6 bisphosphate
dihydroxyaceton phosphate
3- phosphoglyceraldehyde
5 more items...
ATP used
ATP used
reverse process occurring in the stroma
Net production of 2 ATP
Integrated Metabolism
lithotrophic
lithotrophic heterotrophs
consume carbon
use all energy for growth and reproduction
almost impossible to starve to death
lithotrophic autotrophs
use a Ph gradient for energy metabolism
ion bacteria
conventional heterotrophs
most other bacteria
animals
photoheterotrophs
NADPH isn't abundant
carbohydrates are abundant
photoautotrophs
plants
green bacteria
caynobacteria
purple bacteria
inorganic respiration
use high oxidizes coimpounds
hydrogen respiration is easy
certain elements act different when with oxygen
Environmental Factors
Temperature
efficiency is between 5 to 25 degrees C
10 degree C increase can double respiration
below 5 C is decreased
slows down above 40 degrees C
Lack of Oxygen
plants use very little oxygen
soil concentration can alter root oxygen absorption
recent rainfall drops oxygen levels
roots perform anaerobic respiration for the short period
roots undergo anaerobic respiration
floods kill roots
hypoxia-lesser amount of oxygen
Internal Regulation
active metabolisms use the most oxygen
secretion of glands
production of fruit
dormant seeds will use little to no oxygen
Energy Yield of Respiration
What is put in
Glycolysis
1-2 used to initiate
NAD+
One glucose
Krebs Cycle
1 Pyruvate
Acetyl CoA
electron transport chain
6 NADH
2 FADH2
Pentose Phosphate Pathway
Depends of molecule drawn off
2-6 NADH
What comes out
Areobic
Glycolysis
2 pyruvates
Glycolysis forms 2 ATP
NADH
Krebs Cycle
2 FADH2
2 ATP
6 NADH
electron transport chain
up to 34 ATP
NAD
Anaerobic
glycolysis froms 2
pyruvate is fermented
Pentose Phosphate Pathway
NAD+
0-12 ATP
Fermentation
#
Wine
fermented fruit juices
grapes, elderberry, peaches
Vitis vinfera
grapes are the main fruit
skins used are red
skins removed are white
CO2 excapes white Oxygen is blocked
if oxygen enters the wine turns to vinegar
ethanol instead of acetic acid
the longer the more concentration
aged up to 10 or more years
Spirits
high ethanol content 20%
ethanol evaporated to separate from water
#
yeast dies in concentration
depends on fermented material
Wiskey
American
corn, rye, wheat
whiskie
European
malted barely
Brandy
grapes
fruits
rum
molasses
tequila
agave plants
contains mescal
Warnings
classified as depressants
DUI causes 5th most deaths
Families
pregnant mothers affects placenta
can lead to alcoholism
Blood concentration based on how much we drink
Beer
fermented starchy cereal grains
grains are germinated
converts starch to sugars
seed root is used to make malt
malt is mixed with water
hops are added for less sweetness
barely, wheat, corn, or rice
yeast is used to ferment
CO2 leaves so it is artificially added
concentration
depends on starch thats fermented
depends on length of process
Sake is rice beer
higher alcohol concentration
fermented 4 times as long
Respiration Quotient
ratio between Oxygen to CO2
6 O for 6 CO2
Material undergoing respiration
glucose is 1.0
acids > 1.0
fatty acids < 1.0
Can alter between ratios