Objective The objective of this experiment was to measure the rate of photosynthesis at different concentrations of CO2. To determine this, leaf discs were placed in different solutions of bicarbonate and their flotation times were measured. Procedure To begin, 30 leaf discs were extracted from spinach leaves using hole punchers. It was made sure that … Continue reading Observations of the Rate of Leaf Disc Photosynthesis in Solution

Objective The objective of this experiment was to use respirometers to measure the total volume of oxygen consumed by small organisms during respiration. The data obtained for volume would then be used to calculate the metabolic rate. Procedure Six tablets of potassium hydroxide (KOH) were placed at the bottom of a large test tube. A … Continue reading Observations of the Respiration Rate in Small Organisms

PurposeThis was a two part study with a purpose to observe different aspects of osmosis. The purpose of part one was to determine the permeability of different substances to dialysis tubes. The purpose of part two was to determine what concentration of sucrose created an isotonic environment for a certain potato mass and determine its … Continue reading Observations of Osmosis in dialysis tubes and Potato Samples

ObjectiveThe purpose of this experiment was to determine the effect of indole-3-acetic acid (IAA), a plant growth hormone, on the mitosis of onion root cells. It was hypothesized that the presence of IAA would increase the number of onion root cells undergoing division. Molecular structure of Indole-3-acetic acid (credit: Google Images) ProcedureTwo plastic cups were … Continue reading Analysis of the Effects of Indole-3-Acetic-Acid on Mitosis of Onion Cells