Question

A student grew two batches of yeast in separate flasks.
The conditions in each flask were the same except that one flask had a supply of
oxygen and the other was without oxygen.
The results are shown in the graph.

(a) Calculate the average hourly increase in mass of the yeast between 10 hours and 20
hours in the presence of oxygen. Show your working.
(b) What type of cell is a yeast?
(c) What was the concentration of yeast at 10 hours in the absence of oxygen?
(d) What is the independent variable in this investigation?
(e) Explain why the yeast grew better in the presence of oxygen

Answer 1

Answer:

what

Explanation:

I have to find in this question

Answer 2

Answer:

Yeasts are eukaryotic, single-celled microorganisms classified as members of the fungus kingdom. The first yeast originated hundreds of millions of years ago, and at least 1,500 species are currently recognized.