<span>A hapten is one of Ruthie's symptoms that is an example of an innate defense mechanism. The hapten is a molecule which is small and it is not antigenic. The hapten also stimulates the process of production of antibodies in our own body.</span>
Answer:
Choice C. Sodium bicarbonate acted as a pH buffer in Solution 2.
Explanation:
Sodium carbonate is used as pH buffering agent. Buffering agent is a type of solution which contains weak base or acid which stabilize the solution when another strong acid or base is added to the solution. If acid is added, the weak base that is present in the solution reacts with it and when base is added, weak acid reacts with it.
The tissues that are described as voluntary and involuntary would be MUSCULAR TISSUES or MUSCLES; with voluntary muscles having controlled by one's own will while involuntary muscles work without conscious control.
