Changing the number of ________________, creates an isotope of the element. 

           Amino acids are linked together by ____ bonds.

Sodium has one valence electron in its third energy level. To reach a stable energy configuration, sodium will tend to____.​

A student hypothesizes that green algae will grow fastest when exposed to blue light. To test this hypothesis, the student should design an experiment with which independent variable? 

Are saturated or unsaturated fats generally solids at room temperature? Explain why there is a difference in the fluidity of these two related molecules.

Viruses have similar characteristics as living organisms, except they lack 

           Amino acids are linked together by ____ bonds.

When sugar dissolves in water, water is acting as a ____ and the sugar molecules are acting as ____.

Suppose the graph of  is given. Describe how the graph of the function

Under monopolistic competition, entry to the industry is