Without the options to the question, it is hard to say exactly what your teacher is looking for. Very likely it is something commonly found in all nucleic acids like the presence of phosphorus or nitrogen.
The correct answer is C
The plasma membrane is a structure that protects the cell and it's made out of a lipid bi-layer, sugars and proteins. The proteins of the plasma membrane have many functions, some of them are structural, some carry out the cell transport of important molecules and some of them help the cell reactions and are called membrane enzymes . Enzymes are proteins that are capable to speed up a chemical reaction acting as catalysts.
Answer: The correct answer for the fill in the blank is families.
There are eight hierarchical categories used to classify organisms. Order is one of the hierarchical categories used in classifying organisms. It is subdivided into several families. It means that families occupy lower place in the taxonomic categories.
Example- Grasses belong to the order Poales and it belongs to one of its families, which is called Poaceae.
Becauses the structure above inportant in maintains homeostyasis
