Microbial hyaluronidase, coagulase, and streptokinase are examples of
A. antiphagocytic factors.
B. exoenzymes.
C. exotoxins.
D. adhesive factors.
E. hemolysins.
Answer: B
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Hydrogen bonds
1.occur between non-polar molecules or groups. 2.are as strong as covalent bonds. 3.occur between polar molecules or groups. 4.never occur in water.
Fossils have been discovered for about how many species?
A. 10,000 B. 50,000 C. 100,000 D. 150,000 E. 250,000
Alberto had a bad bump on his leg, so he went to see the doctor about it. The physician diagnosed it as a blood clot and said that blood clots can float away into the circulation. One of these floaters is called a(n) ________
A) embolus B) prothrombin C) formed element D) platelet plug
These days many of our food crops are genetically modified. To some people this "frankenfood" poses many dangers and should not be used. Do you agree? Why or why not?
What will be an ideal response?