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MYP
Gas exchange

MYP Biology Gas Exchange Questionbank

MYP Biology Topic Gas Exchange Questionbank | RevisionDojo

Biochemistry

Enzymes

Word and chemical equations

Energy transfer

Nutrition

Digestion

Transport and circulation

Gas exchange

Transpiration and translocation

Tropisms

Type

Difficulty

Question

If the flow of water across a fish's gills were to stop, why would gas exchange eventually cease even if the blood continued to flow?

The concentration of oxygen in the water surrounding the gills would become equal to that in the blood, eliminating the diffusion gradient.

The lack of water pressure would cause the gill filaments to expand and block the capillaries.

The fish would no longer be able to produce the ATP required for the active transport of gases.

Oxygen molecules can only diffuse through moving water and cannot move through still water.

Question

True or False: In fish, the counter-current system involves blood and water moving in the same direction to maximize oxygen uptake.

Which of the following is a structural similarity between the spiracles of an insect and the stomata of a plant leaf?

What is the primary functional reason that tracheoles in insects are located in extremely close proximity to individual muscle cells?

As organisms increase in size, why does the skin typically become insufficient as a sole gas exchange surface?

MYP MYP Biology Topic Gas Exchange Questionbank

Practice MYP MYP Biology Topic Gas Exchange with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for Gas Exchange and mirrors Paper 1, 2 style where relevant.

Get instant solutions, detailed explanations, and build confidence with questions aligned to MYP examiner expectations.

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True

False

They are both connected to a network of fluid-filled vessels for transport

They both utilize active transport pumps to move oxygen into the organism

They are both primarily located on the upper surface of the organism to maximize sunlight

They both represent regulated openings that allow for the entry and exit of gases

To minimize the distance oxygen must diffuse to reach the mitochondria

To provide structural support to the muscle tissues

To allow the muscles to pump air through the spiracles

To prevent the tracheoles from collapsing under high pressure

The metabolic rate of large animals is always lower than that of small animals.

Oxygen cannot penetrate through more than one layer of skin cells.

Large animals do not have moist internal environments to dissolve gases.

The surface area to volume ratio decreases, making the relative surface area too small.

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