Biology Unit 1: Biology Basics Review

All of the following pieces of equipment EXCEPT for _____________ could be useful for transferring a liquid from one container to another.

• beaker

• funnel

• petri dish

• graduated cylinder

Joe needs 25mL of motor oil to test his combustion engine. Which tool would give him the most precise measurement?

• beaker

• flask

• test tube

• graduated cylinder

Which of the measurements below is the most accurate?

• Graduated cylinder - 80.6 mL

• Erlenmeyer flask – 325 mL

• Beaker - 48 mL

• Beaker - 400 mL

Which of the measurements below is the most precise?

• Graduated cylinder - 80.6 mL

• Erlenmeyer flask – 325 mL

• Beaker - 48 mL

• Beaker - 400 mL

Which piece of glassware is never used for making measurements?

• Erlenmeyer flask

• Graduated cylinder

• Beaker

• Test Tube

When leaving a movie theater, a person notices that the sidewalk is now wet. If the person assumes it rained during the movie, the person is making

• a hypothesis

• an inference

• an observation

• a prediction

In performing any laboratory experiment, what is the first step performed out of the following choices?

• collect data from the experiment

• analyze data

• publish results

• form hypothesis

Alexander was studying the effect of playing rock music on plant growth. One of the plants was exposed to rock music for 24 hours a day for a period of 6 weeks. Data on the growth of the plant was collected at the end of each week and plotted in a graph. Based on the data, which would be the MOST reasonable measurement at the end of an 8-week period?

• 2 decimeters

• 6 decimeters

• 8 decimeters

• 16 decimeters

When designing an experiment, scientists will test a relationship between a “cause” and an “effect.” The “effect,” also represented by what the scientist measures and records, is known as the

• dependent variable

• constant

• independent variable

• control group

Alvin, Simon and Theodore decide to test what factors influence water absorption by an egg. They remove the shell from 3 eggs by dissolving them in vinegar. They create three different water solutions. One is pure, 100% distilled water, a second is 50% water/50% corn syrup, and the third is 100% corn syrup. The mass of each egg is measured before they are put into a single solution for 24 hours. The mass of the eggs is then measured, and the data is recorded in the table.

In this experiment, the independent variable they are testing is

• change in the mass of the eggs.

• the ending mass of the eggs

• the amount of time they were in the solution

• the type of solution the egg is placed in