Lecture 2 Bioenergetics Flashcards
Tricarboxylic Acid cycle is also known as:
Krebs Cycle
Importance of Krebs Cycle
Final Common metabolic pathway for oxidation of carbohydrates , fats , proteins ( amino acids )
Where does Krebs cycle happen in the cell?
Mitochondria
How much energy does Krebs cycle produce in ATPs?
10 ATP
Where does carbohydrates mainly get digested? mention 3 places
Mouth, Stomach and small intestine
What happens to starch in mouth?
Starch is hydrolysis by salivary amylase to dextrin and maltose
What happens to carbohydrates in stomach?
HCL hydrolyzes carbohydrates partially to monosaccharides.
Glucose in small intestine
Digestion is completed and absorption to blood
Where does glucose go to first after absorption?
Liver
Glucose undergoes…. For energy production ( oxidation or reduction )
Oxidation
Process in which glucose is broken down to produce energy ( Major pathway )
Glycolysis
Second use of absorbed Glucose
synthesis of other carbohydrates as galactose in lactose of milk, and ribose and deoxyribose for synthesis of nucleotides and nucleic acid.
use of deoxyribose
synthesis of nucleotides and nucleic acid.
Where does glycolysis happen in the cell?
Cytosol
sequence of enzymatic reactions in which one molecule of glucose is converted into either pyruvate in the presence of oxygen or lactate in the absence of oxygen.
Glycolysis
product of glycolysis in presence of oxygen
pyruvate
product of glycolysis in absence of oxygen
Lactate
Energy product of glycolysis in presence of oxygen in ATPs
7 ATP
Energy product of glycolysis in absence of oxygen in ATPs
2 ATP
Importance of glycolysis
- Energy production ( 7 ATP under aerobic conditions or 2 ATP under anaerobic conditions )
- In RBCs it is the only source of ATP.
