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* 1. What is a Punnett square?

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* 2. Genetically modified crops and livestock offer the possibility of greater yield and food quality,
reductions in pesticide use, and higher profits for agricultural businesses. They are viewed by
some as a way to help reduce world hunger by increasing food production and reducing losses
to pests and varying environmental conditions. Each year, industrial agriculture relies more
heavily on genetically modified crops. There are some concerns about our increasing use of
genetically modified crops and livestock, including their safety for human consumption and their
effects on the environment.

Based on the passage above, if genetically modified crops were to be banned, what could be
the largest negative impact to humans?

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* 3. Calculate the mean for the following data points:
55, 87, 71,38, 19

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* 4. The rate of a chemical reaction depends on all of the following except?

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* 5. Animals that feed exclusively on plants are called:

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* 6. Day and night are caused by ______.

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* 7. Which of the following is true?

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* 8. In the 21st century, worker bees in bee colonies have been abandoning their queens and are
deserting their hives in record numbers. Known as Colony Collapse Disorder, honeybees have
been mysteriously disappearing across the planet—and one area that has been seriously
affected is California’s Napa Valley. This issue became more commonly known when The
National Agriculture Statistics Service reported in 2008 that only 2.44 million honey-producing
hives were in the United States, down from 4.5 million in 1980.
There is no consensus among scientists as to what is causing Colony Collapse Disorder, though
the USDA has undertaken a plan of action to stem the collapsing colonies involving several
steps: survey and data collection; analysis of samples; hypothesis-driven research; mitigation
and preventive action. The first findings from the USDA were published in 2009, and suggested
factors such as pesticides, parasites, and pathogens may be possible causes, all of which have
affected hives in Northern California.
One researcher has hypothesized that chemical pesticides are solely responsible for colony
collapse disorder in Napa Valley. To test her hypothesis she is planning to run an experiment.
She has obtained several healthy bee colonies and plans to expose them to pesticides while
measuring the health of the colonies.
Which additional information would be the most useful in helping her design this experiment?

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* 9. As part of a chemistry experiment, 1025 milliliters of water is mixed into a beaker that contains
175 milliliters of motor oil.
(1 liter = 1000 milliliters)
After adding the water, how many liters of liquid are in the beaker?

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* 10. What is most likely the pH of a solution containing many hydroxide ions (OH-) and few
hydrogen ions (H+)?

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