Question

question 20
based on previous published data and some preliminary experiments done in my lab, i hypothesize that a drug called \shrinkase\ will inhibit the growth of a particular type of cancerous tumor. what is my next step in the scientific process?
a find people with that kind of tumor
b obtain a large supply of shrinkase
c determine what my control and experimental groups will be
d submit my hypothesis for peer review
e analyze the results of my experiments

question 21
special proteins responsible for catalyzing reactions in the cell are called.
a polypeptides
b kinases
c enzymes
d reactants

Explanation:

Question 20

After formulating a hypothesis (that "shrinkase" inhibits tumor growth), the next step in the scientific method is to design the experiment, which includes determining control and experimental groups. Option A is part of sample selection (later), B is about obtaining materials (not the next step after hypothesis), D is after experiments, E is after conducting experiments. So C is correct.

Enzymes are biological catalysts (proteins, mostly) that speed up cellular reactions. Polypeptides are chains of amino acids (not all are catalysts), kinases are a type of enzyme (not all catalysts), reactants are substances in a reaction (not catalysts). So C is correct.

Answer:

C. determine what my control and experimental groups will be

Question 21