BIOLOGY - RESPIRATORY SYSTEM
EXAM WITH 100% CORRECT ANSWERS
{ GRADED A+}
In order to meet the needs of every cell in a multicellular organism,
transport and exchange systems are typically characterized by their very
large... - ✔✔Surface area
Invertebrates use __________, epithelia, and gills as their respiratory. -
✔✔Trachea
During __________ respiration, a medium carrying oxygen is run past
respiratory membranes so that gas exchange can occur. - ✔✔External
Which of the following statements about the membranes across which
gas exchange in animals occurs is true?
A. They are always surrounded by water.
, B. They are surrounded by water in water animals, but not in terrestrial
animals.
C. They are surrounded by water in water animals and amphibians, but
not in reptiles, birds and mammals. - ✔✔A. They are always
surrounded by water.
Why have most multicellular organisms evolved structural adaptations
which maximize gas diffusion from the environment? - ✔✔Because
direct diffusion of oxygen into each cell can provide enough oxygen
only over distances under 0.5 mm.
In order to meet the needs of a multicellular organism, its transport and
exchange systems require very large __________ area. - ✔✔Surface
Which of the following are disadvantages of external gills?
A. They are easily damaged.
B. They cannot be adequately supplied with blood.
EXAM WITH 100% CORRECT ANSWERS
{ GRADED A+}
In order to meet the needs of every cell in a multicellular organism,
transport and exchange systems are typically characterized by their very
large... - ✔✔Surface area
Invertebrates use __________, epithelia, and gills as their respiratory. -
✔✔Trachea
During __________ respiration, a medium carrying oxygen is run past
respiratory membranes so that gas exchange can occur. - ✔✔External
Which of the following statements about the membranes across which
gas exchange in animals occurs is true?
A. They are always surrounded by water.
, B. They are surrounded by water in water animals, but not in terrestrial
animals.
C. They are surrounded by water in water animals and amphibians, but
not in reptiles, birds and mammals. - ✔✔A. They are always
surrounded by water.
Why have most multicellular organisms evolved structural adaptations
which maximize gas diffusion from the environment? - ✔✔Because
direct diffusion of oxygen into each cell can provide enough oxygen
only over distances under 0.5 mm.
In order to meet the needs of a multicellular organism, its transport and
exchange systems require very large __________ area. - ✔✔Surface
Which of the following are disadvantages of external gills?
A. They are easily damaged.
B. They cannot be adequately supplied with blood.
