Gas exchange multiple choice

Which of these is NOT a feature of a specialised gas exchange surface?
1. Large surface area
2. Very thick to provide long diffusion distance
3. Selectively permeable
4. A transport system to maintain diffusion gradient
Which shows the correct path taken by oxygen to reach muscle tissues in an insect?
1. trachea, tracheole, spiracle, muscle
2. trachea, spiracle, tracheole, muscle
3. spiracle, trachea, tracheole, muscle
4. spiracle, tracheole, trachea, muscle
What happens to the water in the end of the tracheoles of an insect during periods of high activity?
1. It moves from the tracheole into the cells by osmosis - decreasing volume of water
2. It moves from the cells into the tracheoles by osmosis - increasing volume of water
3. It evaporates from the spiracles
4. It moves back into the trachea due to muscle contractions
Which of these is NOT an adaptation to reduce water loss in insects?
1. Small surface area to volume ratio
2. Exoskeleton made from chitin
3. Spiracles which can be closed
4. One spiracle found on each body segment
Which structures increase the surface area of gill filaments in fish?
1. gill bar
2. lamellae
3. microvilli
4. alveoli
How is the diffusion gradient maintained across the entire width of the gill lamella?
1. parallel flow
2. concurrent flow
3. countercurrent flow
4. two-way flow
Which of the following is NOT an adaptation of a leaf for gas exchange?
1. large surface area of mesophyll cells
2. interconnecting air spaces in mesophyll
3. many stomata
4. thick waxy cuticle
What are xerophytes?
1. Plants adapted to living in areas where water is in short supply
2. Plants adapted to living in areas where there is a lot of water
3. Plants adapted to living in soil with a high salt concentration
4. Plants adapted to living in areas where there is limited sunlight
How is the mammalian trachea supported?
1. By rings of cartilage
2. By the ribs
3. By the pressure of air entering it
4. By the intercostal muscles
How do the cells lining the bronchus prevent dirt particles from reaching the alveoli?
1. Good blood supply
2. Rings of cartilage
3. Mucus and cilia
4. Collagen and elastic fibres
Which muscles contract to bring about inspiration?
1. Diaphragm
2. External intercostals
3. Internal intercostals
4. Pulmonary
How many alveoli are there in each human lung? (approximately)
1. 3 million
2. 30 million
3. 300 million
4. 3 billion

Gas exchange multiple choice

Quiz