Which Species from the List Below Is Isoelectronic with Na¹⁺

question 80

Multiple Choice

Which species from the list below is isoelectronic with Na¹⁺?

• A) K¹⁺
• B) Ar
• C) S^{2 -}
• D) N^{3 -}
• E) Ca²⁺

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Definitions:

Skeletal Muscle

The voluntary striated muscle of vertebrates, so called because it usually is directly or indirectly attached to some part of the skeleton. Compare with cardiac muscle and smooth muscle.

Gap Junctions

Specialized intercellular connections that facilitate the direct transfer of ions and molecules between the cytoplasm of adjacent cells, enabling communication and coordination.

Hydrostatic Skeleton

A support structure in many soft-bodied animals, such as jellyfish and earthworms, that is maintained by the fluid pressure within their body cavities.

ATP Synthesis

The process of producing ATP, the cell's primary energy carrier, through cellular respiration or photosynthesis.