Each weak acid has a characteristic pKa value defined as pKa = -logKa. What does the pKa tell you about the composition of the acid solution?
What will be an ideal response?
It is the pH at which the weak acid is 50% dissociated. The amount of HA in solution is equal to the amount of A- .
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Describe the difference between the use of streptokinase and coagulase as a defense mechanism among pathogens
What will be an ideal response?
Which of the following is FALSE when comparing the mitochondria and chloroplast?
A. Both have similar electron transport protein complexes whose structures have been well conserved. B. Both contain ATP synthase. C. Both generate ATP via a H+ electrochemical gradient. D. The inner-membrane space of the mitochondria is similar to that of the thylakoid space insofar as each has a higher H+ concentration relative to that of the mitochondrial matrix and chloroplast stroma. E. The stroma of chloroplasts is similar to that of the mitochondrial inner-membrane space insofar as each has a higher H+ concentration relative to that of the chloroplast thylakoid lumen and the mitochondrial matrix.
Into which group would you place a photosynthetic organism that lacks a nucleus and has a thin peptidoglycan wall surrounded by an outer membrane?
a. Fungi b. Plantae c. Firmicutes (gram-positive bacteria) d. Proteobacteria (gram-negative bacteria) e. Animalia
Who of the following developed a set of criteria that could be used to establish a causative link between a particular microorganism and a particular disease?
A. Koch B. Lister C. Fracastoro D. Pasteur