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6. Where do the entrance holes take the air to in an insect?
- trachea and then into tracheoles
- the lungs
- the alveoli
- the aleoli
7. Why does water trvel through the gills of a fish?
- because this is where respiration takes place
- to maintain a current of water over them
- to prevent the fish from suffocating
8. What is an adaptation insects have to prevent valuable water from escaping through the entrance holes?
- The holes are on the upper half of the body to prevent water tipping out
- They have no adaptations as there is no water loss
- The holes can be opened and closed using tiny valves
- The holes are very small to reduce water loss
9. why are there rigid rings in the trachea on an insect?
- to replace the absent cell wall
- to keep air passages open
- to keep cells rigid
10. Why does having an exoskeleton make it difficult for gas exchange?
- Due to their being no absorption through the exoskeleton
- As it has a waxy surface making it waterproof which makes it difficult
- Because there is no structure holding the gas exchange system together
11. What does the surface of a lamellae look like?
- a single layer of flattened cells
- an arch
- an inverted dome
- a phospholipid bilayer
12. What system is in place in the fish in order to maintain a diffusion gradient?
- inhalation maintenance system
- counter-current system
- pulmonary ventilation system
13. From there, where does the water go in a fish
- out of the operculum
- through the gills
- down the oesophagus
14. Bony fish have gill arches, where are these located?
- by either side of their head
- just below their fins
- on their abdomen
15. what directions do the water and blood flow in a fish
- blood moves to the right, water moves to the left
- in opposite directions
- blood moves to the left, water moves to the right
16. How do larger insects take in more oxygen on top of this?
- squeezing their abdominal segments together, pumping air into the sacs
- by flying faster so air travels in quicker
- having a higher affinity of haemoglobin
17. Where these entrance holes located on the insects body
- All over the body
- Along the side of their body
- In their mouth
- By their rectum
18. What is the benefit of narrower tracheoles? (insect)
- Shorter diffusion distance to each cell
- larger surface area
- larger surface area to volume ratio
19. Where do tracheoles travel to in an insect?
- to the lungs
- to the brain
- between cells and into muscle fibres, where respiration takes place
- to the cells which complete respiration independently
20. What is located on the bony gill arches of a fish?
- lamellae
- filaments
- more, smaller gills
- the operculum