METABOLISM & CELLULAR RESPIRATION Flashcards
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 .
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 .
3
Q
- what is the anabolic / endergonic / endothermic reaction ?
A
- its an reaction that absorb energy .
- assemble into large molecules .
4
Q
what is the catabolic / exergonic / exothermic reaction ?
A
- its an reaction that release energy .
- broken down into small molecules .
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 .
6
Q
- kinds of mechanical work ?
A
- movement of organelles ,
- movement of the cell generally .
7
Q
- kinds of transport work ?
A
- pumping molecules across membrane .
8
Q
- kinds of chemical work ?
A
- pushing the endergonic reaction to completion .
9
Q
- what is the most available / intermediate source of energy for cellular work ?
A
- it is the adenosine triphosphate ( ATP ) .
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 .
11
Q
- cellular respiration ?
A
- its when the cell release C2O and absorb O2 .
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 .
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 .
14
Q
- forms of cellular respiration ?
A
- there is to forms of cellular respiration :
- anaerobic ,
- aerobic .
15
Q
- anaerobic ?
A
- occur in the cytoplasm ,
- does not need oxygen ,
- produces less energy “ two ATP “ + “ lactic acid .