Enzyme activity can be affected by variety of factors such as temperature, pH, and concentration.
Answer:
Explanation:
As we know that the formula for pH is
![pH = -[log H+]\\](https://tex.z-dn.net/?f=pH%20%3D%20-%5Blog%20H%2B%5D%5C%5C)
It is also given in the question that one pH unit represents the 10 fold change in the concentration of hydrogen ion.
Now for lemon juice whose pH is 2, hydrogen ion concentration is equal to
And for pure water whose pH is 
, hydrogen ion concentration is equal to
Thus, the H+ ion concentration in lemon juice is 
times greater than the pure water.
The correct answer is option A, that is, Phylum Porifera.
The species of Phylum Porifera are aquatic, that is, mostly marine. They exhibit cellular grade of the body, they are diploblastic animals with asymmetrical symmetry. They lack body cavity and exhibits a holozoic mode of nutrition with intracellular digestion.
They lack circulatory and nervous system and possess the tendency to regenerate their parts of the body. The organisms in phylum Porifera exhibits both asexual and sexual mode of reproduction.
The correct answer is:
A. carry out photosynthesis
Answer:
A solution is a homogeneous mixture of two or more substances.
Salt Water
Explanation:
