The lysosome is an organelle that is important to cellular homeostasis through its degradation of different compounds. Degradative enzymes responsible for reactions within the lysosome are most efficient at pH levels below what is found in the cell. What is responsible for allowing a different pH between an organelle and the rest of the cell?

The presence of proton pumps in the lysosome membrane that allows the organelle to maintain higher concentrations of protons.

Explanation:

Lysosomes are known as a membrane-bound cell organelle that is present in many animal cells. They are spherical type vesicles in structure. Lysosomes contain hydrolytic enzymes these enzymes help in the break down of different kinds of biomolecules.

The lysosomal membrane helps to protect the cytosol, and rest of the cells, from the degradative enzymes which are present in the lysosome. They have the ability to maintains their pH by pumping in H+ ions (protons) from the cytosol across the membrane with the help of chloride ion channels and proton pumps.

The ash borer is a density-dependent limiting factor and will start to spread to nearby healthy trees.

Explanation:

Ash borer is a parasite that affects ash trees it is highly destructive and invasive. It affects it Native host causing serious damages. Infected plant is cut down to avoid its spread to other healthy plant this is because ash bored when not control can destroy a whole population of ash trees in it Native environment within the space of 10 years. Its population dependent and would keep increasing in population and become more destructive. Thus, to avoid its spread infected trees are treated cut down and cut down.

Blue ash a type of ash tree shows high resistance to ash borer because of it high tanning content that makes the leaf not suitable to consume to them.