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bio lab quiz 1

QuestionAnswer
We will be examining the effect of mouthwash on bacterial growth. After taking oral samples and incubating them for 24 hours, we will examine the number of bacterial colonies. What is the dependent variable? Bacterial growth
Sap interferes with the surface tension of water. True or False? True
What happens to a red blood cell that is placed in pure water? It bursts
What is the unit used in the Metric System to measure temperature? Celsius
In order to accurately determine the volume of a liquid using a graduated cylinder, you should always read the measurements at the ________ of the mensicus Bottom
Which of the following was the control in Lab 2: Scientific Method and Surface Tension? Using the water without soap
If a plant cell is turgid, it is probably in a hypertonic environment. True or False? False
The length of a paperclip is approximately 3.2 cm. What is the length in mm? 32
Water is a polar molecule. True or False? True
In our surface tension experiment, how did soap effect the surface tension of the water? Soap decreased the surface tension of the water
A solution with a higher concentration of solutes Hypertonic
A solution with a lower concentration of solutes Hypotonic
A solution with an equal concentration of solutes Isotonic
We will be examining the effect of mouthwash on bacterial growth. After taking oral samples and incubating them for 24 hours, we will examine the number of bacterial colonies. Which is a possible controlled variable in this experiment? Length of time rinsing mouth wash; Incubation time; Age of participants; Food eaten 24 hours before the experiment
What phenomenon is responsible for the cohesive and adhesive nature of water? Water molecules exhibit hydrogen bonding
Anita weighs about 68kg. How much does Anita weigh in grams? 68,000 grams
Which of the following base units would be used to measure the length of a cell? Meters
Which term describes the relative concentration of solutes in Karo syrup to the inside of a chicken egg? Hypertonic
Which substance allows scientists to link all o the units of measurements found in the metric system? Water
We will be examining the effect of mouthwash on bacterial growth. After taking oral samples and incubating them for 24 hours, we will examine the number of bacterial colonies. What is the independent variable? Mouthwash
Created by: scarangelo
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