At Age 6, Julia Is Able to Focus on Schoolwork

question 153

Multiple Choice

At age 6, Julia is able to focus on schoolwork. What brain developments promoted this?

• A) Myelination of the pathways in the cerebellum
• B) The parts of the brain that enable sustained attention became myelinated
• C) The pathways that link the cerebellum to the cerebral cortex became myelinated
• D) Increased visual acuity promoted this, not brain development

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Definitions:

Light-Independent Reactions

The series of biochemical reactions in photosynthesis that do not require light to proceed, occurring in the stroma of chloroplasts to synthesize glucose.

Photorespiration

Inefficient sugar-production pathway initiated when rubisco attaches oxygen instead of carbon dioxide to RuBP (ribulose bisphosphate).

Carbon Fixation

Process by which carbon from an inorganic source such as carbon dioxide is incorporated (fixed) into an organic molecule.

Calvin-Benson Cycle

A series of biochemical reactions taking place in the stroma of chloroplasts in photosynthetic organisms, pivotal in converting carbon dioxide into glucose.