A group of high school students came up with an experimental design to measure which type of paper towel is the strongest.  They purchased a store brand paper towel and a name brand paper towel.   They labeled the store brand as “Paper Towel A”, and the name brand as “Paper Towel B”.   They also purchased distilled water to use in their experiment.  While in the lab, they placed 1000 mL  of distilled water in two graduated cylinders, and labeled them “Cylinder A” and “Cylinder B” to coincide with the paper towel labels.  One sheet of each type of towel was placed over separate  empty 500 mL beakers  and secured with Staples #19 rubber bands.    They slowly added single drops of water from cylinder A onto paper towel A until the paper towel was torn.  They then placed the remaining water left in the dropper back into the prospective cylinder A and measured the amount of water still remaining in the cylinder.  The same was done with paper towel B and cylinder B.  Their conclusion was that the  store brand paper towel is stronger, because cylinder A contained the most  amount of water.  Which of the following is the DEPENDENT variable in this experiment?

The cellular structures surrounding the cell in the image below are known as ____________.  

The micrograph below of the mitochondria inside of a cell was produced using the ________.  

Measuring the patient’s energy expenditure with the use of oxygen consumption is referred   to as ______________ calorimetry.

An amino acid is to a protein as a nucleotide is to a ______________.

_________________ is the body’s way of transferring energy from food to the body’s energy currency molecules, ATP.

Peptide bonds join ______________ together.

Beans are a good source of protein but they are not considered a complete protein. Beans are often paired with rice to ensure that all ______ essential amino acids are obtained in the diet of both children and adults.

Tay-Sachs disease is a genetic disorder where cell membrane components cannot be broken down due to the lack of a hydrolytic enzyme. What cellular organelle would be affected?

Biochemical analysis shows a high level of thymine. The molecule that has been analyzed is _________.