Lab #2 - Populations

Activity #1 - Theoretical Growth of Bacterial Population

You are given a small population of bacteria to grow in a test tube environment (5,000 individuals or 5 x bacteria mL). In this scenario, the test tube has a continuous supply of resources, resulting in realized growth. In this environment, the bacterial population doubles every 30 minutes.

  a. Calculate the population density (# bacteria) at each time interval in the table below.

 

Table 1. Theoretical growth of a bacteria population

 

   Time                  Population Densi 

 (hours)              ( bacteria/mL) 

     0                              5 

     0.5                          10 

     1 

     1.5 

     2.0 

     2.5 

     3.0 

     3.5

     4.0

     4.5 

     5.0

 

 

I am having trouble finding a clear cut answer to this question in a journal article

any help with finding it would be appreciated

.what are some reasons the authors suggest newt toxicity vary among different populations?

the article can be found here

http://journals.plos.org/plosbiology/article?id=10.1371/journal.pbio.0060060

Triple Sugar Iron Agar/Kligler Iron Agar

1. As mentioned in Theory, the fermentation readings with TSIA and KIA must take place between 18 and 24 hours after inoculation. a.) Why is this true? b.) Is timming as critical with H2S readings? Why or why not?

I WOULD REALLY APPRECIATE SOME HELP WITH THIS QUESTION REGARDING MICROBIOLOGY LAB. THANKS!

I have a genetics exam tomorrow and I would really appreciatehaving these things dumb downed and explained to me.

This isn't homework, these is learning objectives and I wouldgreatly appreciate the help

Construct a concept map/flowchart for these topics:

-single break in chromosome

-double break in chromosome

-breakage-fusion bridge and/or unequal crossover

-nondisjunction or chromosomal lagging

-cross fertilization of different species