Worker bees acting as scouts are able to communicate the distance of a food supply from the hive by performing a "waggle" dance. The graph shows the relationship between the distance of a food supply from the hive and the number of turns in the waggle dance every 15 seconds.

1. What are the units of the independent variable on the graph?

O   a. seconds
O   b. meters
O   c. time
O   d. none of these

2. What is the maximum number of turns covered by the graph?

O   a. 1000
O   b. 6000
O   c. 1
O   d. 10

3. Which of these best describes the relationship between the distance of the food supply from the hive and the number of turns the bee performs in the waggle dance every 15 seconds?

O   a. as distance to the food supply increases, the number of turns increases
O   b. as distance to the food supply increases, the number of turns decreases
O   c. as the number of turns increases, the distance increases
O   d. none of these

4. A bee performs a waggle dance with 5 turns every 15 seconds. How far is the food supply from the hive?

O   a. 1000 meters
O   b. 2000 meters
O   c. 3000 meters
O   d. 4000 meters

5. The graph shows the relative rates of action of four enzymes, A, B, C, and D. Which enzyme shows the greatest change in its rate of action with the least change in pH? O   a. enzyme A O   b. enzyme B O   c. enzyme C O   d. enxyme D

6. Which relationship is best inferred from the graph data? O   a. As sweage waste increases, oxygen content increases. O   b. As the carp population increases, the whitefish population increases. O   c. As oxygen content decreases, carp population decreases. O   d. As oxygen content decreases, trout population decreases.

Use the following information to answer questions 7 - 9.

Drinking alcohol during pregnancy can cause the class of birth defect known as fetal alcohol dyndrome (FAS). Scientists do not yet understand the process by which alcohol causes damage to the fetus. There is evidence, however, that the more a pregnant woman drinks, the greater the chance that the child will be affected and the birth defects will be serious. Some evidence indicates that even low levels of alcohol consumption can cause intellectual and behavioral problems.

7. The birth weight of babies born to drinking women is

O   a. over 500 grams less than those born to nondrinkers
O   b. over 500 grams more than those born to nondrinkers
O   c. not comparable to nondrinkers
O   d. none of these

8. Which of these physical abnormalities is the third most common for babies born to drinking mothers?

O   a. low birth weight
O   b. small brain
O   c. abnormal facial features
O   d. flattened nasal bridge

9. The "average" length of development for a baby is 38 weeks. Which of these statements is best supported by the data?

O   a. Drinking mothers carry their babies longer than nondrinkers.
O   b. Nondrinking mothers carry their babies longer than drinkers.
O   c. Birth link decreases after 36 weeks of development.
O   d. Physical abnormalities are related to length of development.