Unit 1: Biology Review for Test

Which of the following is NOT a lab safety procedure:

• wearing an apron

• tying your hair back

• not wearing googles

• point the test tube on an angle

Which safety precaution is recommended when a liquid is being heated in a test tube?

• Wear goggles and a laboratory apron.

• Stopper the test tube with a rubber stopper.

• When holding the test tube, keep fingers closest to the open end of the tube.

A possible explanation for a problem or observation is

• independent variable

• control group

• hypothesis

• data

Diagrams, tables, and graphs are used by scientists mainly to

• test a hypothesis

• organize data

• design a research plan for an experiment

In a scientific investigation, after the question is defined, the next step is most likely

• formulating a hypothesis

• collecting the data

• designing the experiment

The independent variable in this experiment is the

• type of tomato plant

• amount of soil provided

• color of tomatoes

• light intensity

King Henry Doesn't Usually Drink Chocolate Milk

• kilo, hecto, deca, unit, deci, centi, milli

• kilo, hecto, deci, unit, deca, centi, milli

• kilo, hector, deca, unit, deci, milli, centi

• 1.0 mm

• 1.4 cm

• 35 mm

• 3 centimeters

• 3 grams

• 3 milliliters

• 3 kilometers

An experiment is carried out to determine how different pH values of soil will affect the growth of tomato plants. In this experiment, the dependent variable could be the

• height of the tomato plants

• pH of the soil

• specific variety of tomato plants used