INTEXT QUESTIONS 3.1
1. In glycolysis pathway glucose is aerobically converted to .................. and
anaerobically ..................
2. All the reaction steps take place in ..................
3. Glycolysis is the only source of energy in .................. cells
4. Number of ATPs gained per glucose molecule in Aerobic conditions of
glycolysis is ..................
5. Number of ATPs gained per glucose molecule in Anaerobic conditions of
glycolysis is ..................
6. Krebs Cycle yield .................. ATP per mole Glucose
WHAT HAVE YOU LEARNT
z In glycolysis pathway glucose is converted to pyruvate in aerobic condition
or lactate in anaerobic condition. All the reaction steps take place in the
cytoplasm.
z Glycolysis is the only pathway that is taking place in all the cells of the
body and is the only source of energy in erythrocytes.
z In Glycolyis, Aerobic conditions yields 8 ATPs and in Anaerobic conditions
yields 2 ATPs per glucose molecule
z Citric acid cycle produces two carbon dioxide molecules. And oxidations
are connected to the electron transport chain where many ATP are produced.
z A total of 38 moles ATP per mole Glucose is yielded in Krebs Cycle
z Glycogenesis is the formation of glycogen from glucose. Glycogen is
synthesized depending on the demand for glucose and ATP (energy).
z In glycogenolysis, glycogen stored in the liver and muscles, is converted
first to glucose-1- phosphate and then into glucose-6-phosphate.
z Two hormones which control glycogenolysis are a peptide, glucagon from
the pancreas and epinephrine from the adrenal glands.
z Gluconeogenesis is a metabolic pathway that results in the generation
of glucose from non-carbohydrate carbon substrates such as pyruvate, lactate,
glycerol, and glucogenic amino acids.
z Blood glucose concentrations in human blood should range between 70-110
milligrams per milliliter (mg/mL). Insulin and glucagon operate in an
antagonistic (opposing) manner.