What is a ribozyme? a) an enzyme that uses rna as a substrateb) an rna with enzymatic activityc) an enzyme that catalyzes the association between the large and small ribosomal subunitsd) an enzyme that synthesizes rna as part of the transcription processe) an enzyme that synthesizes rna primers during dna replication

The correct option is B.

Explanation:

A ribozyme refers to a RNA molecules that has enzymatic properties and can catalyze specific biochemical reactions just like other protein enzymes. Ribozymes are also called catalytic RNA. One of the biochemical reactions catalyzed by ribozyme is the production of protein molecules in the cells; it catalyze the linking of amino acid together to form polypeptides. Ribozymes are mainly located in the ribosomes.

a and b

complete the square on the right side of the equation;

-5(x + 0)^2 + 15

answer: d. y = -x^2 + 15