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HHB Unit 1.7
Cellular Respiration
16
Biology
Not Applicable
05/26/2017

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Term
glucose
Definition
sugar that is the main respiratory substrate in cells
Term
pyruvate
Definition
the end product of glycolysis
Term
glycolysis
Definition
first stage in cellular respiration (breakdown of glucose into pyruvate)
Term
ADP
Definition
adenosine diphosphate; molecule that is phosphorylated to produce ATP
Term
ATP
Definition
adenosine triphosphate; molecule used for energy transfer in cells
Term
citric acid cycle
Definition
second stage of aerobic respiration occurring in the matrix of mitochondria
Term
matrix
Definition
central cavity of a mitochondrion in which the citric acid cycle occurs
Term
mitochondria
Definition
cell organelle in which the aerobic stages of respiration occurs
Term
acetyl group
Definition
produced by breakdown of pyruvate; joins with oxaloacetate in the citric acid cycle
Term
coenzyme A
Definition
substance that carries acetyl groups in to the citric acid cycle
Term
oxaloacetate
Definition
substance that combines with the acetyl group in the citric acid cycle to form citrate
Term
dehydrogenases
Definition
enzymes that remove hydrogen ions and electrons from their substances; important in the citric acid cycle
Term
NAD
Definition
coenzyme that combines with hydrogen ions and electrons released in glycolysis and citric acid cycle and transports them to the electron transport chain
Term
electron transport chain
Definition
group of proteins embedded in the membranes of mitochondria (& chloroplasts)
Term
electrons
Definition
particles that yield energy as they pass through an electron transport chain
Term
ATP synthase
Definition
membrane bound enzyme that synthesises ATP
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