For the Class Interval of 20-25, the Lower Real Limit

question 45

Multiple Choice

For the class interval of 20-25, the lower real limit is.

• A)19.5
• B)20.0
• C)19.0
• D)20.5

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Definitions:

Sodium Ions

Positively charged ions of sodium, vital for cellular processes, including generating electrical signals in neurons.

Potassium Ions

Essential electrolytes in biological systems that play crucial roles in maintaining cell function, including nerve transmission and muscle contraction.

Calcium Ions

Charged particles of calcium that play a vital role in various bodily functions, including muscle contraction and neurotransmitter release in neurons.

Magnesium Ions

Positively charged ions of magnesium, essential for many biological processes in living organisms, including photosynthesis and enzyme activity.