Prepared filter disks a. Collected and mixed liver extract b. They put 4 ml of the extract in a test tube and placed it in boiling water for five minutes. Then they put the boiled extract into a petri dish and soaked 4 disks in it c. Then they pour the rest of the liver extract into a small petri
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with tight spaces. Brief Methods We used a Petri dish with 2 circle‚ and an opening connecting the two. We put 10 Pill Bugs in the opening between the two circles‚ and timed them for one minute. This gave them time to choose dish 1 or dish 2. We then counted the number of Pill Bugs in each circle. We did this 3 times. This was the control group in the experiment. Then we changed the independent variable: the environment in each of the dishes. In dish 1‚ we took strips of paper and
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watch 12.Salt 13.Spoon 14.Empty petri dish Method 1. Gather all materials needed to perform experiment. 2. Using your marker pen label one beaker with 0%‚ another with 10% and the other with 20%. 3. Using tape water fill up each beaker up to 100ml line shown on the side of the beaker. 4. Get your table top scale and cancel to 0.00 and then place your empty petri dish on top. 5. Using your spoon scoop out 10grams of salt into your empty petri dish and then pour into your beaker thats
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eye droppers 10 ml pipettes graduated cylinders small petri dishes dissecting scopes/hand lenses beakers stopwatch live brine shrimp Lysol Bleach vinegar acetone (nail polish remover) Procedures: Place live brine shrimp in a small aquarium tank or a 1000ml beaker with an aerator. Place 2 petri dishes at each lab table. Three tables will be working on sample A and the other half working on sample B. Label each dish . For example at lab table #1 there would be one dish labeled 5% and one labeled 10%
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Windy T. Padilla BIO 008 OP 1-1 Dr. Elmo Ado Laboratory Instruments: Test Tube -A test tube‚ also known as a culture tube or sample tube‚ is a common piece of laboratory glassware consisting of a finger-like length of glass or clear plastic tubing‚ open at the top‚ usually with a rounded U-shaped bottom. Test Tube Rack - A test tube rack is a gadget used in the laboratory for holding test tubes. It is made of a base that has a platform which is mounted
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Student Name: Amaan Rushdi Lab Partner Name: Dylan Course: BIOL 123 Lab Instructor: Megan Grandinetti Sowbug behavior on environment -lab report What area does the sowbugs prefer to choose for their dwelling? Abstract By working with physical isopods‚ ordinarily known as pill bugs‚ sow bugs or roly- polies‚ we tried whether these sowbugs favored a dark spot to a light place. Included in the lab are a few outlines and tables sketching out our aftereffects of the test. We measured recurrence
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Name: Block: Date: Seed Germination Inquiry Lab (adapted from- http://employees.csbsju.edu/SSAUPE/biol106/Labs/seed_germination.htm) Objectives: The purpose of this lab experience is to provide an opportunity to: 1. measure seed germination percentage and rate 2. learn the requirements for seed germination 3. study the effect of various treatments on seed germination 4. grow a plant to maturity 5. learn about a particular species of plant Introduction: A seed is essentially a baby in
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Hypothesis: If three genres of music were played to the same samples of bacteria‚ then the sample with pop music playing to it will have the most growth because pop music has a more positive and upbeat rhythm to it causing the bacteria to grow more. Variables: Control: The petri dish of bacteria without music and the samples of bacteria. Independent Variable: The type of music played to each sample. Dependent Variable: The growth of bacteria in each sample. Constant: The temperature and location‚ volume of music‚ and the time frame music is
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Investigating the Control Dynamics of an Algae-Brine Shrimp Ecosystem 113437768 Introduction The purpose of this lab is to investigate whether an ecosystem consisting of marine algae and brine shrimp are controlled by top-down or bottom-up mechanisms. The terms top-down and bottom-up in the context of ecology describe which trophic levels are enforcing population pressures on the others. Thus‚ the top-down mechanism of control holds that consumers are responsible for determining the abundance of
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decolorizing agent . Materials: One bunsen burner‚ Two bacteria cultures‚ Two microscope slides‚ Inoculating loop‚ Clothespin‚ Gram’s crystal violet‚ Gram’s iodine‚ Decolorizing agent: Gram’s alcohol‚ Safranin‚ Distilled water‚ 1 large petri dish‚ 1 small petri dish‚ Microscope Procedure: Once in groups and materials are obtained one is to heat fix a bacteria culture by sterilizing the inoculating loop with an ignited bunsen burner using the loop to obtain the distilled water to place on a microscope
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