METABOLISM & CELLULAR RESPIRATION Flashcards

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1
Q
  • WHAT IS THE DIFINITION OF METABOLISM ?
A
    • its the total of all chemical reactions that occur in the cell , in order to maintain life .
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2
Q
  • witch is the exact reactions that can be in the cellular metabolism ?
A
  • there is two types of metabolic reactions :
  • the first is anabolic / endergonic / endothermic reaction .
  • the second is catabolic / exergonic / exothermic reaction .
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3
Q
  • what is the anabolic / endergonic / endothermic reaction ?
A
  • its an reaction that absorb energy .

- assemble into large molecules .

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4
Q

what is the catabolic / exergonic / exothermic reaction ?

A
  • its an reaction that release energy .

- broken down into small molecules .

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5
Q
  • does this metabolic reactions do a specific work ?
A
  • yes , there is four main kinds of work ! :
  • the first kind is a “mechanical” work ,
  • the second is the “transport” work ,
  • the last one is the “chemical” work .
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6
Q
  • kinds of mechanical work ?
A
  • movement of organelles ,

- movement of the cell generally .

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7
Q
  • kinds of transport work ?
A
  • pumping molecules across membrane .
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8
Q
  • kinds of chemical work ?
A
  • pushing the endergonic reaction to completion .
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9
Q
  • what is the most available / intermediate source of energy for cellular work ?
A
  • it is the adenosine triphosphate ( ATP ) .
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10
Q
  • what´s break the ATP down , and why ?
A
  • the ATP bonds can be broken by “ hydrolysis “ ( H2O )
  • to release ENERGY
  • ATP + H2O —- ADP + Pi ( INORGANIC PHOPHATE ) + ENERGY .
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11
Q
  • cellular respiration ?
A
  • its when the cell release C2O and absorb O2 .
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12
Q
  • stage one of cellular respiration ?
A
  • begins with glycolysis that takes place in cytosol ,
  • yields a small amount of ATP ,
  • does not require oxygen .
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13
Q
  • stage two of cellular respiration ?
A
  • this respiration takes place in the mitochondria ,

- far effective then the glycolysis , at recovering the energy from food .

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14
Q
  • forms of cellular respiration ?
A
  • there is to forms of cellular respiration :
  • anaerobic ,
  • aerobic .
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15
Q
  • anaerobic ?
A
  • occur in the cytoplasm ,
  • does not need oxygen ,
  • produces less energy “ two ATP “ + “ lactic acid .
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16
Q
  • aerobic ?
A
  • begins in cytoplasm and ends in mitochondria
  • needs oxygen
  • produces “ 36 ATP “ , from the metabolic process of the glucose molecule .
17
Q
  • what is the ( redox ) ?
A
  • its the oxidative and reduction reactions .

- every cell in the body gain its needs from these reactions .

18
Q
  • oxidative reaction ?
A
  • Oxidation is the loss of electrons during a reaction by a molecule .