Practise MYP Biology questions on 4 Processes and review the explanations to check your understanding.
Use these questions for topic practice and to find ideas you want to revisit in your notes or lessons.
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?
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?
True or False: Hydrochloric acid in the stomach is responsible for the final breakdown of proteins into individual amino acids.
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.
True
False
They serve as the primary source of immediate fuel for movement
They are converted directly into glucose for cellular respiration
They provide the molecules necessary to build and repair body structures
They are required to catalyze all metabolic reactions
True
False
Both tissues provide one-way transport from roots to leaves
Xylem is two-way; phloem is one-way (roots to leaves)
Xylem is one-way (roots to leaves); phloem is two-way
Both tissues provide two-way transport depending on the season
