Which of the following is a primary benefit of antipredator vigilance within social groups?

Bateman’s Principle has been used to explain:  

Iron (II) is measured in abandoned mine drainage using a phenanthroline method (Standard Methods for the examination of water and wastewater, method 3500-Fe). In this method 1.00 ml of duplicate water samples are acidified, added to phenanthroline solution and diluted to 100.0 ml. The solution turns deep red and is measured at 510 nm. A series of standards from 0.50-2.00 ug/ml Iron(II) are prepared and their absorbance measured. The data for these solutions is given below. Using this data calculate the concentration of iron(II) in the original mine drainage samples.  

When reporting colony morphology from a MAC, all of the following are reportable characteristics except:

This organism may produce a weak positive catalase test and is PYR positive.

Which method of antimicrobial susceptibility testing usings and antibiotic disk with a known concentration and has the zone size measured?

Which of the following specimen swabs can interfere with testing for viruses on molecular platforms by inhibiting viral replication?

Name the parasite shown in the following image:image002644ab81d.gif

All of these are considered a hospital acquired infection, except:

An organism that will grow on a CHOC plate but not on any other plate would be considered: