A sanitarian has traced a salmonella outbreak to a carrot salad that was prepared on the same surface that was used to cut up raw chicken. The most probable reason for the outbreak was:

A manager discovers that her cook is touching both raw chicken and cooked chicken without changing gloves. What should the manager do?

Without temperature controls, food can be held for up to six hours when an initial temperature of 41°F and when the food temperature does not exceed:

Back flow is when water

A microorganism commonly found in boils, pimples, and cuts, that can be transmitted to food by employees’ hands is:

Ciguatera, which is caused by eating marine fish that have eaten toxic algae, can best be prevented by:

The best way to measure the internal temperature of beef steamship round is to

IMAGING – 2 questions – 5 points total Question 5. requires some drawing and/or some calculations. Please do this problem on a separate sheet of paper, then take a picture of your work and submit it in the field below the question. 

SURFACE PLASMON RESONANCE – 2 questions – 5 points total Question 13. requires some drawing and/or some calculations. Please do this problem on a separate sheet of paper, then take a picture of your work and submit it in the field below the question.

3. MICROSCOPY a. (2 pt) You want to image two fluorescent proteins within the same sample.mEGFP:Excitation max: 488nmEmission max: 507nmmCherry2:Excitation max: 589nmEmission max: 610nmAssume LEDs are used for excitation that precisely match the excitation maxima. Which type of filter would be best to use as an emission filter to detectmCherry2? a. Longpass filter with a 50% cut-off at 520nmb. Shortpass filter with a 50% cut-off at 600nmc. Bandpass filter with 50% cut-offs at 520nm and 660nmd. Bandpass filter with 50% cut-offs at 595nm and 625nm   b. (3 pts) Briefly describe the components of a filter cube and their purposes.