Answer:
Thiamine pyrophosphate (derived from vitamin B1) is a coenzyme required for the activity of pyruvate dehydrogenase enzyme complex.
Explanation:
Pyruvate is the end product of glycolysis. During aerobic cellular respiration, pyruvate is oxidatively decarboxylated into acetyl CoA which in turn enters the Kreb's cycle. Oxidative decarboxylation of pyruvate is carried out by enzyme complex pyruvate dehydrogenase (PDH). The first step is simple decarboxylation and is catalyzed by pyruvate decarboxylase of the PDH complex.
The enzyme pyruvate decarboxylase and has a tightly bound coenzyme, thiamine pyrophosphate. Thiamine pyrophosphate is derived from vitamin B1. Lack of vitamin B1 in the human diet leads to beriberi that is characterized by an increased concentration of pyruvate in blood urine since oxidative decarboxylation cannot occur due to lack of the coenzyme thiamine pyrophosphate.
Food webs with fewer species are more sensitive to the loss of species and ecosystem disturbances
Region of the World Percentage Value in Metric tons
North America 17 23,332,500
Asia 52 71,370,000
Africa 3 4,117,500
Europe 18 24,705,000
Latin America and the Caribbean 8 10,980,000
Oceania <u> 2</u> <u> 2,745,000</u>
100 137,250,000
We multiply the 137.25 million metric tons by its percentage to get its equivalent value in metric tons.
Asia uses 71.37 million metric tons.
In making the bar graph, The vertical line will be the percentage and the horizontal line will be the region. Bars of each region should have different colors for easy identification. Spaces between bars should be present, so that the bar graph will not be confused with the histogram.
