I think the answer is all of the above......
dietitians -> need to learn about human body-> biology
zoologists-> need to learn about animals-> biology
so, since two answers are correct the answer is all of the above
B - exocytosis.
Think of like materials EXitig the cell via EXocytosis
Particles or molecules that are too big to fit through regular pores in the cell membrane, or have to big an electric charge, against the current of passive transport ( lower to higher ).
Answer:
The correct option is 3. "At pH 6.5 the enyzme is 50% active"
Explanation:
For the titratable group to be protonated and cause the enzyme to be in the active state, it needs to have gained a hydrogen cation (H+). In order for that to happen, there must be enough hydrogen cations in the environment of the enzyme, and hence, an acidic pH is required in this case.
