Lab Explained: Carbon Dioxide Production by Yeasts under Different Temperatures

Problem: Yeasts undergo aerobic cell respiration if there is sufficient oxygen and releases carbon dioxide as a waste product. Yeasts, like any other cells, have an optimum temperature at which they work most efficiently, including the process of cell respiration. This experiment aims to discover the relation between temperature and the carbon dioxide yield of…

Lab Techniques: Lab Answers

Abstract In this experiment, 1.41M sodium chloride aqueous solution was prepared and quantitatively transferred into a 250ml volumetric flask to further diluted to 0.141M. The transfer was inspected to be complete by attempting to precipitate with silver nitrate solution. Sand was successfully separated from 600ml water by vacuum filtration. The Pasteur pipet was calibrated to…

Meiosis vs. Mitosis: Comparison

Comparisons Meiosis Mitosis Number of divisions Two Divisions. One cell Division. Number and type of daughter cells produced Results in the formation of four haploid sex cells (gametes) produced. Two diploid identical daughter cells for one cell division. Differences in chromosome arrangement In Metaphase 1, the maternal chromosomes pair with the paternal chromosomes at the…

Properties of Ionic and Molecular Substances Lab

Procedure  Examine the following chemicals at their various stations: NaCl        Ethanol                  CuSO4           NH4NO3                  Kerosene       Sulfur      CaSO4 Ca(NO3)2  Sucrose                  Unknown      O2                          K3Fe(CN)6 Record your observations in a table with the following headings: Name, Formula, Ionic or Molecular, State at RT, Solubility, Colour of Solution, Conductivity of Solution, Melting Point, Boiling Point Analysis Questions Make a…