Procedure: Before beginning this lab please take the time to review this hand out and compare it to the information you know about organic molecules. Then, develop a hypothesis using the If, and Then statement. Go to http://www.okc.cc.ok.us/biologylabs/ and click on the “Organic Molecules” link. Read the introduction, and then proceed with tests for carbohydrates, proteins, fats, and foods. Record and answer all questions AS YOU GO.
Place the two slices, lying down, on the plate. The second thing that needs to be done is get the jar of peanut butter and the knife. Open the jar of peanut butter. Use the knife to scoop out a small amount of peanut butter from the jar. Transfer the peanut butter that is now on the knife to one slice of bread and spread the scoop of peanut butter evenly on this slice with the knife.
Lipids- The materials used in this section were Water, piece of brown paper bag, and vegetable oil. Procedures- Protein-In this experiment we are testing for protein in each solution. We pour drops of biuret reagent into the different contents. If the liquid turns purple, then protein is active. Carbohydrates- In this experiment We test for starch.
September17.2013 P.4 Environmental Sources Of Bacteria Purpose: We did this lab to find out exactly which conditions would help to grow a bacterium the best. Materials: • Agar • Petri dish • Cotton • Incubator • Tape • Bacteria Procedure: 1. Mark bottom of Petri dish 2. Split petri dish into 4 sections and label the sections 3. Pour hot agar into dish 4.
Paper chromatography can be used in separating amino acids and anions, RNA fingerprinting, and testing histamines and antibiotics. (Infromation received from sonic.org Purpose The purpose of this experiment was to separate the dyes that these markers are composed of and show how chromatography works. Materials * Four different markers (including one black permanent marker) * Rubbing alcohol or isopropyl alcohol * Coffee filters (2) * Tall glasses or plastic cups (2) * Pencil * Ruler * Tape * Table salt * Water * Measuring cups/spoons * Clean pitcher or 2-liter bottle Procedure 1. Your first task is to cut the coffee filter into a rectangle measuring three cm by nine cm. You will need 2 for this lab.
6.05 HONORS Lab Report: Dichotomous Key Directions: Use the Dichotomous Key on my site as you carry out this lab. Read all of the instructions below carefully, and fill out the BLUE portions of this sheet. Objectives: After doing this lab activity, you should be able to: Identify bryophytes, pteridophytes, gymnosperms, and angiosperms. Describe the characteristics and classification of the four main plant divisions. Materials: Four plant samples Dichotomous key (a copy is found in the Module Help column at www.rechanek.com) This lab report Hypothesis: 25% Bryophyta 25% Pteridophyta 25% Gymnosperms 25% Angiosperms Procedure: Read all the instructions for this lab before you begin working!
What is the function of the cytoskeleton? To give the cell shape 12. What is inside nucleus that is responsible for providing the cell with its characteristics? DNA Par t D – Pl an t C e ll M o d e l Lo c a t e t h e i m a g e o f t h e p l a n t c e l l m o d e l and click through each of the parts and read their descriptions. Use the information to answer the questions.
Examine a prepared slide of an animal cell through the low- and high-power objective lenses. Repeat steps 8 and 9. 11. Clean up your work area. Make sure to follow your teacher’s directions for safe disposal of materials.
You may spool the DNA on your glass rod or pipette tip. 10. Spool the DNA by dipping a pipette tip or glass right where the extract layer and alcohol are in contact with each other. With your tube at eye level, twirl the rod and watch as DNA strands collect. Data: | Amount Added or Obtained | Initial Color | Purpose | Buffer | 10 ml | blue | Break through the cell membrane | Strawberry | 1 | red | Subject tested
3. Insert your dissecting scissors or scalpel into the left auricle at the base of the aorta and make an incision down through the wall of the left atrium and ventricle, as shown by the dotted line in the external heart picture. Locate the mitral valve (or bicuspid valve) between the left atrium and ventricle. This will have two flaps of membrane connected to papillary muscles by tendons. Make observations and measurements of as many structures as you can, filling in your results table.