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bio test #4 ch. 8
NA
59
Biology
Undergraduate 1
04/12/2011

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Term
breaks down glucose to co2 and energy
Definition
glycolysis
Term
the removing of energy from organic molecules and storing it in ATP
Definition
respiration 
Term
ATP + heat
Definition
energy
Term
produces the cell's ATP
Definition
mitochondria 
Term
three metabolic stages of cellular respiration
Definition

1. glycolysis

2. krebs cycle 

3. electron transport chain and oxidative phosphorylation

Term
harvest chemical energy by breaking down glucose to pyruvate
Definition
glycolysis
Term
glycolysis is a _____ pathway during which a 6 carbon glucose is split into two 3 carbon sugars. which are then rearranged by a stepwise process that produces two ______ molecules
Definition

-catabolic

-pyruvic acid

Term
OCCURS IN THE CYTOPLASM
Definition
glycolysis
Term
occurs with or without O2
Definition
glycolysis
Term
the reactions of glycolysis occur in 2 phases:
Definition

1. glucose activation phase

2. energy harvest phase

Term
phosphorylate means?
Definition
add a phosphate group to
Term
uses cellular ATP to phospholyrate the glycolysis intermediates 
Definition
glucose activation
Term
costs two ATP molecules per glucose
Definition
glucose activation
Term
produces ATP
Definition
energy harvest
Term

yields 4 atp molecules per glucose 

and 2 molecules of nadh per glucose 

Definition
energy harvest
Term
glycolysis is distinct from cellular respiration because ?
Definition
glycolysis does not occur in the mitochondria
Term
if there is no oxygen present then the pyruvic acid molecules from glycolysis go through ______
Definition
fermentation
Term
anaerobic (takes place without o2)
Definition
fermintation
Term
NO ATP PRODUCTION 
Definition
fermentation
Term
results in the partial degration of sugars 
Definition
fermentation
Term
regenerates NAD (that is its purpose)
Definition
fermentation
Term
two most common products of pyruvate reduction 
Definition
ethanol or lactic acid 
Term
two types of fermentation:
Definition

1. alcohol fermentation

2. lactic acid fermentation 

Term
produces ethanol and Co2
Definition
alcoholic fermentation 
Term
produces lactate
Definition
lactate fermentation
Term
how can glycolysis continue producing energy when oxygen is not present?
Definition
fermentation regenerates the NAD+ needed for glycolysis by allowing pyruvate to accept electrons and H+ from NADH
Term
difference between champagne and wine
Definition
difference is carbonation
Term
you help a friend move, and the next day your arms and legs are sore. what caused this soreness?
Definition
you overworked muscles did not get enough O2 and switched to fermintation, which builds up lactate 
Term
if there IS oxygen, the pyruvic acid molecules from glycolysis go to the bridge reaction, followed by the kreb's cycle in _______
Definition
cellular respiration 
Term

-ATP production

-results in the complete breakdown of sugars 

Definition
cellular respiration 
Term
the reaction that connects glycolysis to the Kreb's cycle
Definition
bridge reaction 
Term
converts pyruvic acid to acetyl CoA
Definition
bridge reaction 
Term
occurs in the mitochondrial matrix
Definition
kreb's cycle
Term
completes the breakdown of glucose that glycolysis started 
Definition
krebs cycle
Term
products of glycolysis and Krebs cycle are
Definition

-Nadh

-FADH

- a SMALL amount of ATP generated 

Term
for every molecule of glucose entering glycolysis there are __ pyruvates molecules that can enter the ______
Definition

-2

-krebs cycle

Term
_____ of the krebs cycle are needed to complete the breakdown of ___ glucose molecule 
Definition

-two turns

-1

Term
located in the inner mitochondrial membrane
Definition
electron transport system
Term
accepts energy in the form of electrons from NADH and FADH 
Definition
electron transport system
Term
uses the energy from electron transfers to make ATP via oxidative phosphorylation 
Definition
electron transport system
Term
produces most of (90%) of the ATP cellular respiration 
Definition
electron transport system 
Term
the electron transport system uses the energy from electron transfers to make ATP via _____________
Definition
oxidative phosphorylation 
Term
electrons from NADH and FADH2 pass through a series of enzymes and other proteins called the ____________
Definition
electron transport chain
Term
their energy is used to pump H+ from the matrix into the intermembrane compartment. Creates a gradient
Definition
electron transport chain
Term
people with chronic fatique take what pills?
Definition
NADH
Term
*does the electron transport chain make ATP directly??
Definition
NO!!
Term
the coupling of exergonic electron flow down an electron transport chain to endergonic ATP production by the creation of a proton gradient across a membrane 
Definition
chemiosmosis
Term
site of chemiosmosis ATP synthesis
Definition
inner mitochondrial membrane 
Term
______ activate enzymes used to make ATP
Definition
protons 
Term
for every NADH into the electron transport chain _________ are moved from the mitochondria matrix to the intermemrane component 
Definition
3 protons
Term
For every FADH2 that feeds into the electron transport chain _______ are moved from the mtochondrial matrix to the intermembrane compartment 
Definition
2 protons
Term
for every proton that crosses back into the mitochondrial matrix one ATP is synthesized by 
Definition
atp synthesis
Term
EVERY MOLECULE OF GLUCOSE ON YOUR BODY CREATES _____ ADP, FROM ____ GLUCOSE
Definition

36

1

Term
two things that are at metabollic crossroads
Definition
glycolysis and kreb cycle 
Term
can accept components from most of the major types of macromolecules found in food
Definition
cellular respiration
Term
cells can switch off the pathways they dont need by __________
Definition
feedback inhibitions 
Term
tell the cells how much energy we have
Definition
feedback mechanisms
Term

atp/adp high means

low means?

Definition

energy high

energy low

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