Lesson 2.5.2
2.5.2 Cystic fibrosis and the gaseous exchange, digestive and reproductive systems Quiz: Pearson Edexcel Biology, Unit 2
20 questions
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Lesson 2.5.2, Cystic fibrosis and the gaseous exchange, digestive and reproductive systems: 20 multiple choice questions for the Pearson Edexcel Biology (9BI0), Unit 2: Genes and Health, written with Revision Ninja.
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The 20 questions
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What is the main effect of thick mucus in the lungs of cystic fibrosis patients?
- Collapses alveoli
- Blocks airways
- Destroys cilia
- Inhibits surfactant
-
Why can digestive enzymes not reach the small intestine in cystic fibrosis?
- Pancreatic ducts blocked
- Bile duct damaged
- Stomach acid neutralised
- Gallbladder removed
-
What causes infertility in most males with cystic fibrosis?
- Damaged seminiferous tubules
- Non-motile sperm
- Absent prostate gland
- Blocked vas deferens
-
What prevents sperm from passing into the uterus in females with cystic fibrosis?
- Lack of oestrogen
- Thick cervical mucus
- Blocked fallopian tubes
- Absence of ovaries
-
Which human organ system is most directly damaged by recurrent lung infections in cystic fibrosis?
- Circulatory system
- Gaseous exchange system
- Digestive system
- Endocrine system
-
Why does cystic fibrosis cause malabsorption of fats in the duodenum?
- Lipase cannot enter
- Bile production stops
- Villi are destroyed
- Stomach acid neutralised
-
Which structures in the liver can become blocked by thick secretions in cystic fibrosis?
- Hepatic veins
- Hepatic arteries
- Lymph vessels
- Bile ducts
-
Which three organ systems are primarily affected by a mutated CFTR protein?
- Digestive, respiratory, reproductive
- Digestive, nervous, reproductive
- Digestive, endocrine, respiratory
- Respiratory, immune, circulatory
-
Which two digestive enzyme types cannot reach the duodenum when pancreatic ducts are blocked?
- Amylases and maltases
- Proteases and lactases
- Lipases and sucrases
- Lipases and proteases
-
A man with CF is infertile. Which structure is most directly responsible for this?
- The bronchioles
- The cervix
- The vas deferens
- The duodenum
-
Why do people with cystic fibrosis experience frequent lung infections?
- Phagocytes are destroyed
- Mucus traps bacteria
- Cilia stop beating
- Alveoli burst open
-
What is the medical term for fatty, bulky stools caused by pancreatic insufficiency?
- Constipation
- Diarrhoea
- Steatorrhoea
- Dysentery
-
How does thick mucus affect the action of ciliated epithelial cells in airways?
- Destroys cell nuclei
- Prevents ciliary movement
- Stops ATP production
- Increases cilia length
-
Where are the non-functional CFTR channels located that cause pancreatic duct blockage?
- Gallbladder wall cells
- Stomach mucosal cells
- Ileum villus cells
- Duct epithelial cells
-
What primary physical failure causes recurrent chest infections in cystic fibrosis?
- Decreased surfactant production
- Reduced phagocyte count
- Thickened alveolar membrane
- Impaired mucociliary clearance
-
Into which part of the small intestine do pancreatic enzymes normally travel?
- Colon
- Ileum
- Jejunum
- Duodenum
-
What condition causes intestinal blockage in newborns with cystic fibrosis?
- Hirschsprung disease
- Meconium ileus
- Pyloric stenosis
- Intussusception
-
Which main factor reduces fertility in females with cystic fibrosis?
- Blocked fallopian tubes
- Irregular ovulation cycles
- Thick cervical mucus
- Uterine fibroid growth
-
Why is sweat chloride concentration abnormally high in people with cystic fibrosis?
- Decreased sodium excretion
- Increased water reabsorption
- Increased chloride secretion
- Reduced chloride reabsorption
-
Why do cystic fibrosis patients take pancreatic enzyme supplements with meals?
- Stimulation of insulin
- Digestion of nutrients
- Absorption of oxygen
- Inhibition of mucus
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