One of the proerties on enzyme activity is that each enzyme acts in a specific medium true or false?

Each enzyme acts at a specific temperature, specific pH, and on a specific substrate (food upon which the enzymes act). For example, salivary amylase (found in the saliva of the mouth) works best at neutral pH, whereas gastric enzymes work best in acidic medium, and the intestinal or pancreatic enzymes work best in basic medium.

Explanation:

Aiding in emotional processing and arousal functions are functions of the thalamus

Option A

Explanation:

Thalamus is located above the brain stem. Thalamus plays a vital sensory role which aids in the emotional processing and arousal functions. The thalamus has three main parts the anterior, medial and lateral.  

All sensory information except smell passes through the thalamus. Thalamus is so called as the relay station. It receives the information, modulates it and then sends it back as signals. A sensory impulse is create when touched and it is passed on to the cerebral cortex exhibiting the arousal .