A 5-Year-Old Human Child Typically Devotes 50% of His or Her

question 27

Multiple Choice

A 5-year-old human child typically devotes 50% of his or her total body metabolism to

• A) skeletal muscle.
• B) thermoregulation.
• C) the brain.
• D) sodium‒potassium pumps.

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Definitions:

Cristae

Short, fingerlike projections formed by the folding of the inner membrane of mitochondria.

Mitochondria

Organelles within cells that produce energy through the process of cellular respiration, often referred to as the powerhouses of the cell.

Matrix

A matrix refers to the intercellular substance or material, often comprising proteins and fluids, in which cells or particles are embedded in tissue or culture media.

Cytoplasm

The jelly-like substance within a cell that surrounds the nucleus and organelles, providing a medium for biochemical reactions.