WorksheetsMetabolic Pathways in Nursing Practice
Total questions: 15
Worksheet time: 8mins
What is the primary purpose of glycolysis?
The primary purpose of glycolysis is to break down fatty acids.
The primary purpose of glycolysis is to transport oxygen in cells.
The primary purpose of glycolysis is to produce energy in the form of ATP.
The primary purpose of glycolysis is to synthesize proteins.
Describe the main steps involved in the glycolysis pathway.
Oxidation, phosphorylation, hydrolysis, condensation, and conversion to acetyl-CoA.
Fermentation, reduction, synthesis, hydrolysis, and conversion to glucose.
The main steps involved in the glycolysis pathway include phosphorylation, isomerization, cleavage, oxidation, ATP generation, and conversion to pyruvate.
Decarboxylation, condensation, phosphorylation, reduction, and conversion to lactate.
How does glycogenolysis occur in muscle cells?
Glycogenolysis occurs through the action of insulin, promoting glycogen synthesis instead of breakdown.
Glycogenolysis is initiated by glucose-6-phosphate, which directly converts glycogen to glucose.
Glycogenolysis occurs through the action of glycogen phosphorylase, converting glycogen to glucose-1-phosphate, which is then converted to glucose-6-phosphate for energy production.
Glycogenolysis is facilitated by lactate, which transforms glycogen into pyruvate for energy.
What hormones regulate glycogenolysis in the body?
Thyroxine and somatostatin
Insulin and cortisol
Testosterone and norepinephrine
Glucagon and epinephrine
Explain the role of gluconeogenesis in maintaining blood glucose levels.
Gluconeogenesis lowers blood glucose levels by converting glucose into fat during excess intake.
Gluconeogenesis produces glucose exclusively from dietary carbohydrates after meals.
Gluconeogenesis maintains blood glucose levels by producing glucose from non-carbohydrate sources during fasting or low-carbohydrate intake.
Gluconeogenesis helps in blood glucose regulation by breaking down muscle tissue for energy.
What are the key regulatory enzymes in gluconeogenesis?
Acetyl-CoA carboxylase, citrate synthase, phosphofructokinase, pyruvate kinase
Lactate dehydrogenase, malate dehydrogenase, hexokinase, glycogen phosphorylase
Aldolase, isocitrate dehydrogenase, transaldolase, phosphoglycerate kinase
Pyruvate carboxylase, PEPCK, fructose-1,6-bisphosphatase, glucose-6-phosphatase
How does insulin affect glycolysis and gluconeogenesis?
Insulin inhibits glycolysis and stimulates gluconeogenesis.
Insulin has no effect on glycolysis or gluconeogenesis.
Insulin decreases glycolysis and promotes gluconeogenesis.
Insulin stimulates glycolysis and inhibits gluconeogenesis.
What are the clinical implications of impaired glycolysis?
Impaired glycolysis leads to enhanced metabolic efficiency and weight gain.
Impaired glycolysis can lead to energy deficits, metabolic acidosis, and various clinical symptoms such as fatigue and muscle weakness.
It causes increased oxygen consumption and improved muscle strength.
Impaired glycolysis enhances energy production and reduces fatigue.
In DKA, the body produces ketone bodies because:
Fat breakdown increases due to lack of insulin
Glucose uptake by cells increases
Excess insulin promotes lipogenesis
Protein synthesis increases
How does the body respond to diabetic ketoacidosis (DKA)?
The body responds to DKA by producing ketones, leading to metabolic acidosis, and compensates through increased breathing and hormonal changes.
The body stops producing glucose, causing hypoglycemia and fatigue.
The body increases fat storage, leading to weight gain and dehydration.
The body produces insulin, reducing blood sugar levels and preventing acidosis.
What are the signs and symptoms of DKA?
Signs and symptoms of DKA include excessive thirst, frequent urination, nausea, abdominal pain, weakness, confusion, fruity-scented breath, rapid breathing, and decreased consciousness.
Extreme fatigue and muscle cramps
Persistent cough and chest pain
Severe headache and blurred vision
How can nursing interventions help manage DKA?
Performing physical therapy and conducting patient education sessions.
Providing dietary counseling and scheduling regular exercise.
Nursing interventions help manage DKA by monitoring vital signs, administering IV fluids, providing insulin therapy, and replacing electrolytes.
Administering oral medications and monitoring blood sugar levels.
What is the relationship between glycolysis and lactic acid production?
Lactic acid is formed from glucose without glycolysis.
Glycolysis produces pyruvate, which is converted to lactic acid under anaerobic conditions.
Glycolysis directly produces lactic acid in aerobic conditions.
Glycolysis converts lactic acid back to pyruvate in the liver.
How does exercise influence glycogenolysis in muscle cells?
Exercise stimulates glycogenolysis in muscle cells to meet increased energy demands.
Exercise inhibits glycogenolysis in muscle cells to conserve energy.
Exercise has no effect on glycogenolysis in muscle cells.
Exercise decreases glycogenolysis in muscle cells during rest.
What laboratory tests are used to diagnose glycogen storage diseases?
Urine tests, cholesterol levels, thyroid function tests, muscle biopsy
Blood pressure readings, vitamin levels, kidney function tests, MRI scans
Enzyme assays, blood glucose levels, liver function tests, genetic testing
X-rays, CT scans, hormone assays, stool tests
