Which of the following statements about "flesh-eating" streptococci is FALSE?

A) It is caused by a group A streptococcus.
B) It is also known as necrotizing fasciitis because it travels along the fascia.
C) It causes death in over 50% of cases.
D) It is considered a common complication of pyoderma.
E) It involves toxemia.


D

Biology & Microbiology

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Arrange the following electron carriers in the electron transport chain, based on their standard reduction potentials.Cytochroms a3(Fe3+) + e- ? Cytochrome a3 (Fe2+)   Eo (volts) = 0.35Ubiquinone + 2H+ + 2e- ? Ubiquinone H2                     Eo (volts) = 0.10Cytochrome a (Fe3+) + e- ? Cytochrome a (Fe2+)     Eo (volts) = 0.29Cytochrome c (Fe3+) + e- ? Cytochrome c (Fe2+)     Eo (volts) = 0.25

A. ubiquinone - cytochrome a - cytochrome a3 - cytochrome c B. cytochrome a3 - cytochrome a - cytochrome c - ubiquinone C. ubiquinone - cytochrome c- cytochrome a- cytochrome a3 D. cytochrome c - ubiquinone - cytochrome a - cytochrome a3

Biology & Microbiology

Protocol for testing susceptibility test systems include testing _____ consecutive days

a. daily for 7 b. bi-weekly for 30 c. every other day for 14 d. with use for 20

Biology & Microbiology

Why must an animal such as an amphibian remain moist?

What will be an ideal response?

Biology & Microbiology

Select the incorrect statement related to sarcomere structure and function.

A. Sarcomeres are the smallest subunits of muscle contraction. B. Stacks of thick filaments produce dark bands, called the A band. C. Two Z lines form the opposite borders of one sarcomere. D. Thin filaments are not present in the H band of a sarcomere. E. I bands consist of both thin and thick filaments.

Biology & Microbiology