Which of the following toxins produced by Staphylococcus aureus are considered 'Super Antigens'?
A. Cytotoxins
B. B-lactamase
C. Enterotoxins
D. Hyaluronidase
Ans: C. Enterotoxins
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Enzymes ____
a. change the rate of a reaction b. change the direction of a reaction c. change the free energy of a reaction d. are used up in a reaction e. are present in concentrations approaching their substrates' concentrations
According to the mathematical equation used in the Hardy-Weinberg principle, if the alleles for a certain trait in a population are A1 and A2, then the proportion of individuals with the genotype ________ is represented by 2pq
Fill in the blank(s) with correct word
A man has been standing in one place without moving for a long time. You walk by and notice that his ankles are swollen. What is a likely explanation for this observation?
A) Since the man has not flexed his leg muscles, blood has not moved upward through the veins so it stays pooled at his ankles. B) The man's blood pressure has likely increased because of inactivity, and thus the blood has pooled at his ankles. C) Since the man hasn't flexed his leg muscles, blood has not moved upward through the arteries so it stays pooled at his ankles. D) The man's heart rate has likely increased because of inactivity, and thus the blood has pooled at his ankles.
Please match the viral diagnostic method to its description. Used to detect signs and symptoms associated with a specific viral infection
A) PCR B) Immunological testing C) Electron microscopy D) Cell and tissue culture techniques E) Observation of the patient