Streptococcus pyogenes binds to plasminogen and then secrets _______ that creates plasmin that degrades tissue.
A. streptokinase
B. M protein
C. exfoliative toxin A
D. hyaluronidase
E. coagulase
Answer: A. streptokinase
You might also like to view...
The number of linkage groups in a species that does not have sex chromosomes is:
A. 1n B. 1n + 1 C. 2n D. 2n + 2
In ALL exergonic reactions, ___.
A. the reaction proceeds with a net release of free energy. B. a net input of energy from the surroundings is required for the reactions to proceed. C. the reactions are nonspontaneous. D. the products have more total energy than the reactants. E. some reactants will be converted to products.
A monohybrid cross is made for flower color, where purple is dominant to white. Fifteen hundred F2 offspring are analyzed. How many white flowers are expected?
What will be an ideal response?
Melting of ice and thus reduced feeding opportunities for polar bears is occurring because of the ________.
A) increase in phytoplankton population B) drying up of lakes and streams C) constant breaking and reforming of hydrogen bonds in water D) increase in CO2 and other greenhouse gases in the atmosphere