Standardized Test Prep

Multiple Choice

1. To ensure that a scientific work is free of bias and meets standards set by the scientific community, a research group's work is peer reviewed by

   1. anonymous scientific experts.

   2. the general public.

   3. the researchers' friends.

   4. lawmakers.

2. Which of the following characteristics is NOT shared by both a horse and the grass it eats?

   1. uses energy

   2. response to stimolus

   3. movement from place to place

   4. stable internal environment

3. Which of the following statements about a scientific theory is NOT true?

   1. It has the same meaning in science as it does in daily life.

   2. It enables scientists to make accurate predictions about new situations.

   3. Scientific theories tie many hypotheses together.

   4. It is based on a large body of evidence.

4. A bird-watcher sees an unusual bird at a feeder. He takes carefol notes on the birds color, shape, and other physical features and then goes to a reference book to see if he can identify the species. What aspect of scientific thinking is most apparent in this situation?

   1. observation

   2. inference

   3. hypothesis formation

   4. controlled experimentation

5. Unlike sexual reproduction, asexual reproduction involves

   1. two cells.

   2. two parents.

   3. one parent.

   4. one nonliving thing.

6. One meter is equal to

   1. 1000 millimeters.

   2. 1 millimeter.

   3. 10 kilometers.

   4. 1 milliliter.

Questions 7–8

Once a month, a pet owner recorded the mass of her puppy in a table. When the puppy was 3 months old, she started to feed it a special puppy food she saw advertised on TV.

7. According to the table, which statement is true?

   1. The puppy's mass increased at the same rate for each month shown.

   2. The puppy's mass was less than 5 kg at the start of the new diet.

   3. The puppy gained 5 kg between age 3 and 4 months.

   4. The puppy had gained 13 kg as a result of the new diet.

8. All of the following statements about the pet owner's study are true EXCEPT

   1. The owner used the metric system.

   2. The owner recorded data.

   3. The owner could graph the data.

   4. The owner conducted a controlled experiment.

Open-Ended Response

9. Explain how a controlled experiment works.

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