Identify the Correct Statement

question 3

Multiple Choice

Identify the correct statement:

• A) Ca²⁺ is used in signalling because of its selectivity for only very specific binding sites.
• B) Binding of Ca²⁺ to calmodulin deactivates this enzyme.
• C) Calcium signalling proteins are small proteins that change their tertiary structure upon Ca²⁺ binding.

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Definitions:

Conducting Division

The part of the respiratory system including air passages that conduct air to the lungs, such as trachea and bronchi.

Major Bronchioles

Small airways in the lungs that branch off from the primary bronchi and lead to the alveoli, facilitating the passage of air.

Functional Residual Capacity

The volume of air remaining in the lungs after a normal, passive exhalation, which is crucial for continuous gas exchange in the lungs.

Residual Volume

The volume of air remaining in the lungs after a forceful exhalation, ensuring that the lungs do not collapse.