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MYP Biology Processes Questionbank

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?

A

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

B

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

C

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

D

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

Question

The living material in an ecosystem that contains stored chemical energy is called __________.

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 best describes the functional importance of 'materials' obtained through nutrition, as distinct from energy?

Which statement correctly compares the direction of transport in xylem and phloem?

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

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biomass

trophic levels

inorganic matter

chlorophyll

True

False

They serve as the primary source of immediate fuel for movement

B

They are converted directly into glucose for cellular respiration

C

They provide the molecules necessary to build and repair body structures

D

They are required to catalyze all metabolic reactions

A

Both tissues provide one-way transport from roots to leaves

B

Xylem is two-way; phloem is one-way (roots to leaves)

C

Xylem is one-way (roots to leaves); phloem is two-way

D

Both tissues provide two-way transport depending on the season

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MYP Biology Processes Questionbank

MYP MYP Biology Topic Processes Questionbank