The ethylhydrocupreine hydrochloride disk is used for the identification of

A. Streptococcus (bovis) gallolyticus
B. Group A beta-hemolytic streptococci
C. Haemophilus influenzae
D. Streptococcus pneumoniae


Ans: D. Streptococcus pneumoniae

Biology & Microbiology

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Bacteria can exchange genes with other bacteria by a method called ____

a. binary fission b. transduction c. conjugation d. translation e. transformation

Biology & Microbiology

Once formed, B cells mature in the _____, while T cells mature in the _____. Fill in the blank(s) with the appropriate word(s)

Biology & Microbiology

If DNA replication were fully conservative, how many intact parental double helices would have been detected in Meselson and Stahl's experiment after three rounds of replication?

A) 7 B) 3 C) 8 D) 0 E) 1

Biology & Microbiology

The double-strands of DNA result from the formation of ________ between the bases.

A. covalent bonds B. peptide bonds C. ionic bonds D. hydrogen bonds E. ??1,4 bonds

Biology & Microbiology