Bio 156 Lab 1

Topics: Scientific method, Hypothesis, Science Pages: 5 (1422 words) Published: November 11, 2013
LAB 1
1. Describe the function of the following pieces of safety equipment and how each might be used: (10 points) a. Eye Wash (2 points)
The eyewash fountain is used to rinse chemical splashes off the eyes. They are used by rinsing the eyes 15 to 30 minutes with water. b. Fire Blanket (2 points)
Fire blankets are used to extinguish small fires. They are used by covering the small fires with the blankets until it extinguishes. c. Shower (2 points)
Safety showers were made to eliminate any fire or chemical spills on the body. They are used by standing underneath the shower and turning it on for 15 to 30 minutes. d. Chemical Spill Kit (2 points)

Chemical Spill Kits are used eliminate any chemical spills. If there is an acid spill you use a base to control it and clean up, if it’s a base spill you use an acid to clean up and throw away in a chemical container. e. Biological Spill Solution (2 points)

Biological Spill Solution is used to control any Biological organism in a container where they are stored and should be handled with extreme care. 2. Briefly describe a situation when each of the following waste disposal containers would be used and give examples of the waste involved: (4 points) a. Broken Glass Container (2 points)

Broken glass containers would be used whenever there is broken glass or to discard coverslips. For example if I am measuring liquid and drop the graduated cylinder then the glass should be discarded in the broken glass container. Thermometers should never be thrown away in this container. b. Biological Hazards Materials Container (2 points)

Biological hazards material container would be used when discarding any organism that was used for example human blood that was used in a test or animal blood. 3. Metric Measurements: Perform each of the following conversions. (24 points) a. Given that one inch = 2.54 cm. State the student's height in inches and then convert to centimeters. (4 points) I don’t know which student it’s talking about so I did my height. I’m 66 inches tall and 167.64 centimeters tall.

b. The width of a normal sheet of paper is 8.5 inches. Convert this length to kilometers. (4 points) 0.0002159 km
c. A lab exercise in BIO156 required 300 ml of water that was poured from a two-liter container. How many milliliters were left in the original container? (4 points) 1700 mL
d. A typical can of soda is 355 ml. How many liters are there in this can of soda? (4 points)
0.355 L

e. The weight of a small bag of sugar is 2.265 kg. The student is baking cakes for a college scholarship fundraiser. It takes 100 grams of sugar to make one small cake. How many cakes can be made from a single bag of sugar? (4 points) 22 cakes

f. The student is conducting a nutrition experiment using lab rats. One group (control group) is fed a normal diet, while the other group (experimental group) is fed a diet high in protein. There were 30 rats total used in the experiment. At the end of the experiment, the average mass (weight) of a rat in the control group was 60.4 g while the average mass (weight) of a rat in the experimental group was 0.0689 kg. What is the average difference in weight between the two groups in grams? (4 points) 64.65 g

4. Temperature: Perform the following temperature conversions: (6 points) a. Normal body temperature is 98.6°F. The student is not feeling well and only has a Celsius thermometer available. The student's temperature is taken and the thermometer reads 38.5°C. 1. Convert the temperature to Fahrenheit. (1 point)

101.3 Fahrenheit
2. Is the student running a fever (i.e., is the normal body temperature above normal)? (1 point) Yes, the student is running a fever since its above normal temperature.

b. The student's cookbook says roast beef is rare at 140°F, medium at 160°F, and well done at 170°F. The student prefers beef cooked medium and only has a meat thermometer in °C. What temperature will the thermometer reach for the roast to be done the way the...
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