Simplify
- $\left( a ^ { - 1 } + b ^ { - 1 } \right) ^ { - 1 }$

question 161

Multiple Choice

Simplify.
- $\left( a ^ { - 1 } + b ^ { - 1 } \right) ^ { - 1 }$

• A) \(\frac { a b } { a - b }\)
• B) \(\frac { a b } { a }\)
• C) \(\frac { a + b } { a b }\)
• D) \(\frac { a b } { a + b }\)

---

Definitions:

G Proteins

A family of proteins that act as molecular switches inside cells, involved in transmitting signals from stimuli outside the cell to its interior.

Chronic Asthma

A long-term inflammatory disease of the airways in the lungs, characterized by recurrent episodes of wheezing, coughing, and shortness of breath.

Bronchioles

Small airways in the lungs that lead from the bronchi to the alveoli, facilitating the exchange of oxygen and carbon dioxide.

Beta-Adrenergic

Referring to receptors responsive to adrenaline and noradrenaline, involved in the fight or flight response.