The same catalase-positive, coagulase-positive, beta-hemolytic Gram positive coccus from the previous question was isolated from an infected finger wound.  Based on the most likely pathogen, the isolated organism _________ be considered a definitive pathogen, and ____________ grow on MacConkey agar.

You have cultures tubes of five organisms on your lab bench. However, the labels of the tubes have come off and you need to relabel the tubes correctly! First, you look up some of the various reactions for the organisms in question: genus gramreaction shape (morphology) catalasereaction glucosefermentation lactosefermentation phenylalaninedeaminase citrateutilization Bacillus + rod + + or – ? ? ? Staphylococcus + coccus + + ? ? ? Enterobacter – rod + + + – + Morganella – rod + + – + – Pseudomonas – rod + – – – ? What one specific laboratory procedure will provide results to differentiate Bacillus and Staphylococcus from each other and also from the remaining three genera?

All organisms in this picture SHOULD BE GRAM NEGATIVE. What most likely went wrong with the gram staining technique to produce this image?

The diagnosis of a specific recent/current infectious disease can be best accomplished by using which type of serologic test?

Which of the following white blood cells is capable of further differentiation in the tissues?

Chickens that lack a Bursa of Fabricius were unable to make immunoglobulin in response to antigen injection. This result led to the discovery of which of the following cell types?

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A drug is introduced that alters blood pH. Predict how this change would affect enzyme function, oxygen binding by hemoglobin, and chemical equilibrium within the body. Then explain how changes at the molecular level—including bonding, concentration, energy transfer, and gas behavior—can lead to large-scale physiological effects in human systems.

Determine whether each molecule is paramagnetic or diamagnetic. Then explain how magnetic properties can influence behavior in biological and medical contexts. In your discussion, describe the relevance of paramagnetism to imaging techniques such as MRI and discuss how magnetic properties may affect molecular interactions in biological systems.

Assign formal charges where appropriate and identify any resonance structures. Then explain how resonance stabilization increases molecular stability. In your explanation, connect resonance to energy lowering, electron delocalization, and the structural flexibility of molecules.