In this lab, you will study anaerobic respiration (fermentation) by mixing yeast

Question

In this lab, you will study anaerobic respiration (fermentation) by mixing yeast with a substrate such as glucose and monitoring the CO2 produced. You will learn a protocol for doing a standard fermentation experiment and then you will be able to explore this reaction in more detail in Design 1B by designing your own experiment with variables of your choosing and recording their effect on fermentation rates. 1. Calculate the concentration (% w/v) of the yeaststock prepared by your instructor (see,protocol). 1 pt Enter your answer here 7 g dry yeast dissolved in a total volume of 50 ml in 40 mM Na phosphate buffer, pH 7 (see protocol).

Explanation / Answer

In 50 ml buffer dissolve 7 gm of yeast.

So, in 100 ml there be 14 gm of yeast. Therefore , %W/V = 14%.

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