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Gaseous Exchange { 5 }

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Chapter 7, Part 5.
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Quiz by cloud.berry, updated more than 1 year ago
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Created by cloud.berry almost 11 years ago
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Resource summary

Question 1

Question
To support ___, cells take in oxygen and give out carbon dioxide by a process called ___ .
Answer
  • aerobic respiration | cellular respiration
  • aerobic respiration | gaseous exchange
  • anaerobic respiration | gaseous exchange

Question 2

Question
Gaseous exchange -the exchange of gases between an organism and its environment- takes place by..
Answer
  • diffusion
  • osmosis
  • facilitated diffusion
  • active transport
  • bulk transport

Question 3

Question
Highlight the factors that determine the rate of diffusion in living things.
Answer
  • the amount of oxygen available in the blood stream only
  • the amount of carbon dioxide in the body
  • the size of the surface area available for gaseous exchange
  • the difference in concentration
  • the length of an organism
  • the length of the diffusion path
  • the size of a living thing only

Question 4

Question
The shorter the diffusion path, the lower the rate of diffusion -so the respiratory surface must be as thin as possible.
Answer
  • True
  • False

Question 5

Question
Many multicellular animals have very many of their cells too far away from the body surface to receive enough oxygen by diffusion alone.
Answer
  • True
  • False

Question 6

Question
Active organisms have an ___ metabolic rate and so require more___ in their cells; mammals have specialised organs for gaseous exchange.
Answer
  • increased | oxygen
  • decreased | oxygen
  • increased | carbon dioxide
  • decreased | carbon dioxide

Question 7

Question
In mammals the respiratory surface consists of..
Answer
  • gut
  • capillaries
  • lungs
  • arteries

Question 8

Question
Since the lungs are in a protective position inside the ___, air must be brought to the respiratory surface and so the lungs must be ___ .
Answer
  • chest | freed
  • oesophagus | cushioned
  • trachea | ventilated
  • thorax | ventilated

Question 9

Question
A ventilation system is..
Answer
  • an enzyme-activated mechanism that moves air in and out of the lungs efficiently, maintaining the concentration gradient for diffusion.
  • a pumping mechanism that moves air in and out of the lungs efficiently, maintaining the concentration gradient for diffusion.
  • a pumping mechanism that moves air into the lungs efficiently, maintaining the concentration gradient for diffusion.
  • a pumping mechanism that moves air out of the lungs efficiently and maintains the concentration gradient for facilitated diffusion.

Question 10

Question
The lungs are housed in the thorax, an ___ formed by the ___ and its ___ with a domed floor, the ___ .
Answer
  • airtight | rib-cage | intercostal muscles | diaphragm
  • impervious | rib-cage | intercostal muscles | abdomen
  • upright | rib-cage | muscles | diaphragm
  • airtight | ribs | intercostal muscles | stomach

Question 11

Question
The internal surfaces of the thorax are lined by the..
Answer
  • finger-like projections, villi
  • double membrane
  • epidural membrane
  • pleural membrane
  • nuclear membrane

Question 12

Question
This membrane secretes ___ which is a lubricating liquid derived from ___ and protects the lungs from friction during breathing movements.
Answer
  • serotonin | platelets
  • pleural fluid | blood plasma
  • pleural fluid | platelets
  • oxytocin | platelets

Question 13

Question
The ___ work together to prevent food from entering the __ which which connects the lungs to the ___ at the rear of the mouth and runs beside the ___ .
Answer
  • glottis and epiglottis | trachea | pharynx | oesophagus
  • glottis and cartilaginous flap | trachea | pharynx | oesophagus
  • glottis and epiglottis | oesophagus | pharynx | trachea
  • glottis and epiglottis | pharynx | trachea | oesophagus

Question 14

Question
Air is drawn into the alveoli when the air pressure is lower in the lungs than in the atmosphere; it is then forced out when the situation reverses.
Answer
  • True
  • False

Question 15

Question
The volume of the thorax is decreased when the ribs move up and out an the diaphragm dome is lowered.
Answer
  • True
  • False

Question 16

Question
The volume of the thorax is decreased by the diaphragm muscles relaxing and becoming more dome shaped by pressure from below; the ribs now move in and down as the intercostal muscles relax.
Answer
  • True
  • False

Question 17

Question
The lung tissue consists of the alveoli, arranged in clusters and served by a bronchiole. They have ____ and a ___ system wraps around the clusters of them and is connected to the ___ and is drained by a branch of the ___ .
Answer
  • integral walls | capillary | pulmonary artery | pulmonary vein
  • elastic connective tissue | capillary | pulmonary artery | pulmonary vein
  • elastic connective tissue | capillary | pulmonary vein | pulmonary artery

Question 18

Question
Highlight the advantageous features of alveoli.
Answer
  • thick walls -prevent pathogens from crossing into blood stream
  • Large surface area
  • only artery supply to alveoli
  • Thin walls -short diffusion path
  • compact small surface area
  • capillary supply to alveoli
  • surface film of moisture
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