A child climbed to the top of a hill and slides down.  What type of energy is generated by the movement down?

A protein that forms a pore or space in a membrane that allows a particle to move from one side of the membrane to the other is called a:

What is the net overall energy yield for cellular respiration in eukaryotes?

Which of the following is a biological catalyst that brings molecules into the correct position to react?

In the absence of oxygen, what process reduces pyruvate so it can oxidize NADH back to NAD+?

Chlorophyll a absorbs _________ light and reflects _________ light.

A red blood cell is placed into a hypertonic solution.  What do you expect to happen to the cell?

You add a drop of green food coloring to a glass of water.  You walk away for a half hour and when you return the glass is a uniform shade of light green.  What process has occurred?

Molecules transported via passive transport move with the concentration gradient and require energy.  

Blending Problem: Frederick’s Feed company receives four raw grains from which it blends its dry pet food. The pet food advertises that each 8 oz. can meets the minimum daily requirements for vitamin C, protein and iron. The cost of each grain as well as the vitamin C, protein and iron are summarized below. grain Vitamin C (units/lb) Protein (Units/lb) Iron (Units/lb) Cost (lb) 1 9 12 0 0.75 2 16 10 14 0.90 3 8 10 15 0.80 4 10 8 7 0.70    Frederick’s is interested in producing an 8 oz. mixture at minimum cost while meeting the daily requirements of 6 units    of vitamin C, 5 units of protein and 5 units of iron.    Formulate this as a linear program: Assume 4 decision variables, x1,x2,x3 and x4.   LHS SYMBOL RHS Vitamin Protein Iron 1/2 lb x1+x2+x3+x4 = 0.5