Biology- Cellular Respiration

Kastania
Flashcards by Kastania, updated more than 1 year ago
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Grade 11 Bio-20
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Question Answer
Cellular Respiration Is the process that releases energy by breaking down glucose and other food molecules in the presence of oxygen
Is cellular respiration the process of converting glucose to ATP? Yes
Cellular Respiration Equation C6H12O6 + O2 = CO2 + H2O + 38 ATP
What are the 2 types of Respiration? Aerobic Respiration & Anaerobic Respiration
Aerobic Respiration requires? Oxygen
Where does Glycolysis occur? In the Cytoplasm
Where does the Krebs cycle occur? In the mitochondria
Does Anaerobic Respiration Require oxygen? No
Where does the electron transport chain occur? In the mitochondria
In how many stages does respiration take place? 3 main stages
Define Glycolysis Glycolysis is the process in which 1 molecule of glucose is oxidised to produce 2 molecules of pyruvic acid
What are the 3 main stages of respiration? 1. Glycolysis ( anaerobic ) 2. Krebs Cycle ( aerobic ) 3. Electron Transport Chain ( aerobic )
Are 2 ATP used to convert glucose into tto 2 molecules of PGAL Yes
what is formed when each NAD+ accepts a pair of electrons? NADH
2 molecules of PGAL will be oxidised to produce 2 molecules of _______? Pyruvic acid
What does NADH do with the electrons until they can be transferred to other molecules? NADH holds the electrons
Pyruvic acid is a _______ compound? Is a 3-carbon compound
What does NAD+ help do? It helps to pass energy from glucose to other pathways in the cells
As PGAL is oxidised, 2 molecules of ___ will be reduced to form 2 molecules of _____. These will be used in the ___________ As PGAL is oxidised, 2 molecules of NAD+ will be reduced to form 2 molecules of NADH These will be used in the Electron Transport Chain
Does the oxidation of PGAL also result in the production of 4 ATP? Yes it does
Glycolysis only produces a gain of 2 ATP per molecule of ______? of Glucose
Pyruvic acid may enter the mitochondria for the_________? or remain in the cytoplasm for ____________? Pyruvic acid may enter the mitochondria for the Kerbs cycle or remain in the cytoplasm for Fermentation ( anaerobic )
Does glycolysis require oxygen to produce energy? no it does not
cellular respiration is an energy _____ process It is an energy releasing process
Could a cell rely only on glycolysis for ATP production? If not, why ? No it can not, because the cell would run out of NAD+ to accept hydrogen electrons
NAD+ ? NAD+ is a hydrogen acceptor
Does a cell need a small amount of energy to get the reaction of cellular respiration going ? Yes it does need to invest in a small amount of energy to start the process
During glycolysis 2 ATP molecules are consumed during the beginning . How many ATP molecules are produced by the end of glycolysis? 4 ATP molecules are produced by the end
In order for glycolysis to keep going, must the NADH deliver high energy cargo of electrons to another pathway? Yes, so they can be used again
Glycolysis has a gain of how many ATP's 2 ATP
How many possible paths can Pyruvic acid take ? 2 possible paths
During the production of NADH 2 ______ are removed from each PGAL. These electrons are then passed on to the electron acceptor NAD+ During the production of NADH 2 high energy electrons are removed from each PGAL.
What does the path that the pyruvic acid will take, depend on? It depends on whether oxygen is present or not
If oxygen is present, the pyruvic acid will enter the_______ and undergo ________ respiration. If oxygen is present, the pyruvic acid will enter the Mitochondria and undergo aerobic respiration.
What stages does Aerobic respiration include? The Krebs cycle & the electron transport chain
Will aerobic respiration provide more ATP then Glycolysis? Yes
If there is NO oxygen, the pyruvic acid will enter the _______ pathways of _________ If there is NO oxygen, the pyruvic acid will enter the anaerobic pathways of fermentation
Fermentation provides how much additional ATP? None
Where does anaerobic fermentation occur? In the cytoplasm
Most ATP produced during aerobic respiration is produced by ___________? Electron Transport Chain
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