All of the following pertain to Streptococcus pyogenes except
A. is often from an endogenous source
B. secretes streptokinase
C. causes impetigo
D. coats itself with host proteins
E. causes gas gangrene
Ans: E. causes gas gangrene
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What term describes an organism with two complete sets of chromosomes from two different species?
A. Tetraploid B. Aneuploid C. Allodiploid D. Allotetraploid
The principle of species individuality suggests that in response to climate change, species should migrate
A. as individual species. B. as individual ecosystems. C. through a process of primary succession. D. in response to a steady level of disturbance. E. None of these choices are correct.
Which of the following is most limiting for plant growth, especially in relation to the plant's carbon uptake?
A. phosphorous B. potassium C. nitrogen D. calcium E. magnesium
Which of the following is a stage of mitosis?
A) cytokinesis B) telophase C) interphase D) DNA synthesis