Streptococcal pharyngitis, commonly called "strep throat," is caused by ________.
A. Streptococcus trachius
B. Streptococcus pyogenes
C. Streptococcus pneumoniae
D. Streptococcus mutans
Answer: B
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The centrosome:
A. is a region of the chromosome where sister chromatids remain attached. B. is a region of the chromosome where kinetochores attach. C. is a region of the chromosome where microtubules attach to chromosomes during mitosis. D. is the microtubule organizing center for the mitotic spindle. E. All of these choices are correct.
Where would one find the leaf axillary bud?
A. in the internode of the stem B. near the terminal bud C. between the leaf petiole and the stem D. between the leaf petiole and the leaf blade E. between leaflets on a compound leaf
Anions are _____ charged ions and cations are _____ charged ions
Fill in the blank(s) with the appropriate word(s).
How were insertion sequences (IS elements) first discovered?
What will be an ideal response?