Our lab procedure was to take five equal potato core pieces similar in weight and place each in a different beaker which has the five different sugar solutions. Ap biology investigative labs: comprehensive links provides a list of links to the online resources in the teacher manual to access the data files needed for big idea 1: evolution, investigative lab 3: comparing dna sequences to understand evolutionary relationships with blast, follow the directions below.
Weigh each of the potato slices and record 8 take out 50ml solutions 9 put 1 potato in each solutions leave it in overnight (16 hours and 2 minutes) sandra, natalia, and bora procedures- continued 10 take the potatoes out with a spoon and gently dry to potato without squeezing any water out 11. Ap biology lab 1 - diffusion & osmosis paul andersen starts with a brief description of diffusion and osmosis he then describes the diffusion demonstration and how molecules move over time. Ap biology lab #1: diffusion and osmosis purpose: in this lab, we will be conducting an experiment where we will observe the acts of passive transport: diffusion and osmosis the experiment will show how molecules in a solution are able to move from an area of high concentration to an area of low concentration.
First, slice the potato into to 3-cm discs use the potato corer to core out 24 cores weigh 4 cores together and record their mass fill each cup with one of the following solutions: distilled water, 02 m glucose, 04 m glucose, 06 m glucose, 08 glucose, and 10 m glucose in each cup put 4 potato cores, and allow them to sit over night. The abnormal biology of a baby joseph was an unhappy baby he didn’t sleep for long periods and appeared to cry all a time he’d best if he had been held and rocked, or walked. 11 design an experiment: if you are given a solution of sucrose that has an unknown molarity (2, 6, 8, 10), how could you use potatoes, distilled water, or other known solutions to determine the molarity of your unknown extension experiment color code the solutions you made in part 1 with food coloring and remove their labels.
Design an experiment: if you are given a solution of sucrose that has an unknown molarity (2, 6, 8, 10), how could you use potatoes, distilled water, or other known solutions to determine the molarity of your unknown. Laboratory 1, ap biology 2011 spurthi tarugu, kavinmozhi caldwell, chelsea mbakwe, radha dave, navya kondeti abstract: the basic principles of osmosis and diffusion were tested and examined in this lab.
Diffusion and osmosis timing and length of the lab this investigation requires a minimum of four laboratory periods of about 45 minutes each, plus time for discussions and measurements there are three subparts, each alignment to the ap biology curriculum framework. Timing and length of the lab this investigation requires a minimum of four laboratory periods of about 45 minutes alignment to the ap biology curriculum framework diffusion and osmosis.
Our lab procedure was to take five equal potato core pieces similar in weight and place each in a different beaker which has the five different sugar solutions each beaker contained 50 ml of the colored solutions. Ap biology lab: osmosis - teacher's guide exercise 1 - osmosis across a membrane materials needed: determining the water potential of potato cells cutting potatoes can be done with a cork borer or with a french fry cutter download doc file of ap lab - osmosis other ap labs: enzyme lab.
In this part of the lab, you will use pieces of potato tissue placed in different molar concentrations of sucrose in order to determine the water potential of potato cells first, however, let’s explore what we mean by the idea of water potential.
Potato cork borer 02 m sucrose balance 2 250 ml beakers 04 m sucrose potatoes masking tape and sharpie 06 m sucrose plastic wrap distilled water 08 m sucrose scalpels weighing dishes procedure: 1 pour 100 ml of the assigned solution into a labeled 250-ml beaker 2.