In most cells , Ca channels regulate a wide variety of intracellular processes due to their role in controlling biochemical Ca concentrations .
In most cells , Ca channels regulate a multitude of biochemical processes due to their role in controlling intracellular ca concentrations .

Are these two sentences paraphrases of each other?
no

Amata leucacma is a species of the moth of the Erebidae family it is found in Queensland ( Australia ) .
Amata leucacma is a species of moth of the family Erebidae . It is found in Queensland ( Australia ) .

Are these two sentences paraphrases of each other?
yes

With the help of Chuck Aber and Lady Aberlin , Daniel finally faces his fears .
Daniel finally faces his fears , with the aid of Chuck Aber and Lady Aberlin .

Are these two sentences paraphrases of each other?
yes

Mathematically , ligand efficiency ( LE ) can be defined as the ratio of non-hydrogen energy from gibbs ( I G ) to the number of free atoms in the connection .
Mathematically , ligand efficiency ( LE ) can be defined as the ratio of Gibbs non-hydrogen energy ( G ) to the number of free atoms of the compound .

Are these two sentences paraphrases of each other?
yes