Why are we constantly warned to make sure that hamburger and other meats are cooked thoroughly?

What will be an ideal response?


Ans: To warn people to provide enough heat to kill Escherichia coli O157:H7 contaminating the meat.

Biology & Microbiology

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Stable integration of foreign DNA into a bacterial host genome is generally accomplished through induced plasmid transformation than by natural uptake of free DNA fragments. 

Answer the following statement true (T) or false (F)

Biology & Microbiology

All of the following are general components of the growth factor signaling pathway EXCEPT

A. tyrosine kinase-linked receptor. B. GRB2-Sos-Ras complexes. C. phosphorylated transcription factors. D. Raf-1. E. IP3 and Ca2+.

Biology & Microbiology

The growth of bacterial cultures is best described as

A. arithmetic growth. B. lag growth. C. logarithmic growth. D. cell division. E. replication.

Biology & Microbiology

The normal habitat for Vibrio cholerae is (humans/animals/water).

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology