Surface Area to Volume Ratio as a factor limiting cell size

(a boring Learning Outcome for something awesome!!)

IB BiologyTopic 2

http://www.cellsalive.com/howbig.htm

Now you will carry out a lab to investigate this!

But firstly…..a review!

What is wrong with this table?Table showing oxygen:

Glucose CO2 produced Mean

1 2 31% .2 .4524 .4 0.1169

333332% 1.2 1.342 1 1.183% 3.5 1,3 3.5678

682.789

A table showing the volume of carbon dioxide produced by Saccharomyces cerevisae with different concentrations of glucose being utilised as the primary respiratory substrate

Glucose concentration (% volume)

Volume of CO2 produced (±0.01ml)

Mean volume of CO2 produced (±0.01ml)

Trials made

1 2 3

1 0.200 0.452 0.400 0.117

2 1.200 1.342 1.000 1.180

3 3.500 1.300 3.568 0.200

Extension: ‘The unsexiest thing in science’ reading

• Read throught the article

• Copy the article sub headings into your notebook but leave a space under each one

-What’s it all about?-Keeping your cool-Limits to growth-Scaling: Galileo one, Gulliver nil

• Underneath each subheading SUMMARISE that section of the article in to FIVE BULLET POINTS