Biology 1 Unit 1 Pre-test

Diana and Mike were going to be late to their next class. After rushing to put away a few materials, they left the rest of the materials on the lab table. Which lab safety rule is being broken in the scenario?

• Keep the work area clean and clean up after the lab is over
• Do not pick up broken glass with your bare hands
• Do not taste any of the lab materials
• Tie back long hair and push up long sleeves

The metric base unit for measuring mass is ____________, but it is measured in ______________ in the United States.

• newtons, grams
• grams, pounds
• pounds, grams
• grams, newtons

A typical aspirin has a mass of 500 mg. Convert this quantity to grams.

• 0.05 grams
• 0.5 grams
• 50 grams
• 5000 grams

Approximately how many mL of water are in the graduated cylinder below?

• 50 mL
• 43 mL
• 40 mL
• 38 mL

Which of the following is NOT a goal of science?

• to investigate and understand the natural world
• to explain events in the natural world
• to establish a collection of unchanging truths
• to use derived explanations to make useful predictions

Why is collaboration so important in the building of scientific knowledge?

• Collaboration allows for the sharing of knowledge to better develop plans and experiments.
• Collaboration prevents plagiarism.
• Collaboration allows more people to take the blame if something goes wrong.
• Collaboration allows private companies to make more profit from their employees' works.

The work of scientists usually begins with...

• testing a hypothesis.
• careful observations.
• creating experiments.
• drawing conclusions.

Susie places 3 beakers in the freezer. The first beaker contains water only, the second contains water and salt, and the third contains a water and sugar solution. Susie recorded the temperature and the time at which each mixture froze. Which is the most appropriate hypothesis for her experiment?

• Salt affects the freezing point of water.
• The addition of salt raises the freezing point of water.
• The addition of sugar lowers the freezing point of water.
• The addition of different substances affect the freezing point of water.

Below is a table showing the data collected in an experiment completed in a biology class. What is the dependent variable in the experiment based on the information in the table?

• number of plants
• amount of fertilizer
• death rate
• mass of plant

Using the graph below, what is the independent variable for the experiment performed?

• time of heating the water
• temperature of water
• amount of water
• degrees C