Podcast
Questions and Answers
Which of the following processes would be directly affected by a decrease in the surface area of the small intestine?
Which of the following processes would be directly affected by a decrease in the surface area of the small intestine?
- Absorption of lipids (correct)
- Absorption of water
- Digestion of proteins
- Digestion of carbohydrates
A student is investigating the rate of diffusion of a substance through an agar block. Which of the following variables would NOT affect the rate of diffusion?
A student is investigating the rate of diffusion of a substance through an agar block. Which of the following variables would NOT affect the rate of diffusion?
- The concentration gradient of the substance
- The temperature of the agar block
- The color of the substance (correct)
- The size of the agar block
Which of the following describes the role of the alveoli in gas exchange?
Which of the following describes the role of the alveoli in gas exchange?
- They provide a large surface area for gas exchange. (correct)
- They are the site of oxygen production through photosynthesis.
- They transport oxygenated blood to the heart.
- They filter air to remove dust and pathogens.
Which of the following is NOT a mechanism that insects use to maximize gas exchange?
Which of the following is NOT a mechanism that insects use to maximize gas exchange?
Which of the following is a likely consequence of lung diseases on gas exchange?
Which of the following is a likely consequence of lung diseases on gas exchange?
Flashcards
Size and surface area
Size and surface area
The relationship between an object's size and its surface area affects its functions, especially in biological processes like diffusion.
Digestion of carbohydrates
Digestion of carbohydrates
The process of breaking down carbohydrates into simpler sugars for absorption in the digestive system.
Absorption of proteins
Absorption of proteins
The process where digested proteins are taken up by the body, mainly occurring in the small intestine.
Gas exchange in humans
Gas exchange in humans
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Effect of lung diseases
Effect of lung diseases
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Study Notes
Topic: Biology A Level
- Module 24-25: Full A level bio topics.
- 3.3.1: Size and surface area.
- 3.3.3 & 3.2.3: Digestion and absorption of carbohydrates, proteins, and lipids. Practical activity is highlighted with the use of agar blocks.
- 3.3.2: Gas exchange in fish and insects, and gas exchange in humans.
- 3.3.2: Effect of lung diseases, and possible project-based investigation.
- Carousel of dissection: Focus on lungs, gills, and locusts.
- Revision and consolidation: This section covers review and solidifying learning from previous topics.
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