Respiration equation, Respiratory substances & Anaerobic respiration

?
What is the equation for respiration?
C6H1206 + 6O2 = 6CO2 + Energy (38ATP)
1 of 15
Where does the 6CO2 come from?
The decarboxylation reactions in the link reaction(2CO2) and the Krebs cycle (4CO2)
2 of 15
What is the primary respiratory substrate?
Glucose
3 of 15
When will fat be respired?
If glucose supplies are low
4 of 15
When will protein be respired?
In near starvation conditions
5 of 15
What happens when fats are respired?
-Triglycerides are hydrolysed(broken)into glycerol&fatty acids
-Phosphorlylation of glycerol is performed using ATP & glycerol phosphate is formed
-Glycerol enters the glycolytic pathway
-Fatty acids are broken down into 2-carbon molecules and enter the a
6 of 15
What happens when proteins are respired?
-Hydrolysed(broken) into amino acids
-Amino group is removed in the liver (deamination)
-Pyruvate & acetyl coenzyme A enter the Krebs cycle
7 of 15
All substrates are respired ..?
Aerobically (with O2)
8 of 15
What happens in the absence of oxygen?
Anaerobic respiration occurs, therefore only glycolysis can occur
9 of 15
What do the biochemical reactions involved in glycolysis produce?
Hydrogen atoms which MUST be removed
10 of 15
Pyruvate in glycolysis is converted to?
Another compound
11 of 15
In plants and yeast pyruvate is converted to ?
Ethanol and CO2
12 of 15
In animals the pyruvate is converted to?
Lactate
13 of 15
What must occur for the continuation of glycolysis?
-Oxidation of NADH
-This frees up the NAD to be used again in glycolysis
-Hydrogen acceptors are available
14 of 15
What is an advantage and disadvantage of Anaerobic respiration?
ADV=Fast process as its through the cytoplasm and therefore substances don't have to diffuse into the mitochondria
DIS=Only net gain of 2 ATP molecules ,inefficient compared to aerobic respiration
15 of 15

Other cards in this set

Card 2

Front

Where does the 6CO2 come from?

Back

The decarboxylation reactions in the link reaction(2CO2) and the Krebs cycle (4CO2)

Card 3

Front

What is the primary respiratory substrate?

Back

Preview of the front of card 3

Card 4

Front

When will fat be respired?

Back

Preview of the front of card 4

Card 5

Front

When will protein be respired?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Biological molecules, organic chemistry and biochemistry resources »