Lesson 5.1.4a
5.1.4a Hormones and blood glucose regulation Quiz: OCR Biology, Unit 5
20 questions
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Lesson 5.1.4a, Hormones and blood glucose regulation: 20 multiple choice questions for the OCR Biology (H020), Unit 5: Communication and homeostasis, written with Revision Ninja.
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The 20 questions
-
Hormones are transported in which fluid to reach their target cells?
- Lymph only
- Saliva
- Cerebrospinal fluid only
- Blood
-
Which gland secretes adrenaline?
- Adrenal cortex
- Pituitary gland
- Adrenal medulla
- Pancreas
-
Which group of hormones is secreted by the adrenal cortex?
- Glycoproteins
- Peptide hormones
- Catecholamines
- Corticosteroids
-
Which tissue in the pancreas contains the endocrine cells?
- Myelin sheath cells
- Islets of Langerhans
- Pancreatic ducts only
- Acini
-
Which specific pancreatic cells secrete the hormone insulin?
- Acini cells
- Delta cells
- Beta cells
- Alpha cells
-
Which hormone raises blood glucose by stimulating glycogen breakdown in the liver?
- Glucagon
- Aldosterone
- Insulin
- ADH
-
Which process is stimulated by insulin to lower blood glucose?
- Glycogenolysis
- Gluconeogenesis
- Glycolysis
- Glycogenesis
-
Which structural feature characterises all endocrine glands?
- They contain acini
- They have ducts
- They are ductless
- They possess cilia
-
What is the response of pancreatic beta cells to high blood glucose?
- Inhibiting glycogenesis
- Secreting glucagon
- Secreting adrenaline
- Secreting insulin
-
Which hormone is secreted when blood glucose falls below normal?
- Glucagon
- Adrenaline
- Insulin
- Thyroxine
-
How do insulin and glucagon maintain blood glucose homeostasis?
- Antagonistic negative feedback
- Positive feedback loops
- Cascade amplification
- Irreversible inhibition
-
Which carbohydrate is stored in liver cells to regulate blood glucose?
- Glycogen
- Glucagon
- Glucose 6-phosphate
- Glycerol
-
Which ions enter pancreatic beta cells to trigger insulin secretion?
- Calcium ions
- Sodium ions
- Chloride ions
- Potassium ions
-
Which secretion shows the exocrine function of the pancreas?
- Glucagon
- Pancreatic juice
- Somatostatin
- Insulin
-
What condition results from autoimmune destruction of pancreatic beta cells?
- Type 1 diabetes
- Diabetes insipidus
- Type 2 diabetes
- Hypoglycaemia
-
Which biochemical pathway is stimulated by both adrenaline and glucagon?
- Lipogenesis
- Glycogenolysis
- Glycogenesis
- Glycolysis
-
What happens to insulin secretion as blood glucose returns to normal?
- It decreases
- It increases
- It stops permanently
- It remains unchanged
-
Why do hormones affect only specific target cells in the body?
- Duct connections
- Complementary surface receptors
- Target cell enzymes
- Nuclear pores
-
How are endocrine hormones transported to distant target tissues?
- Along neurones
- In the blood
- Across synapses
- Through ducts
-
Which of these is an endocrine gland?
- The sebaceous gland
- The salivary gland
- The sweat gland
- The adrenal gland
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