Under normal circumstances, which of the following is(are) normally sterile environments in mammals?

A. Ureters
B. Urinary bladder
C. Kidneys
D. All of the choices are correct.


Answer: D

Biology & Microbiology

You might also like to view...

The Bartlett pear and McIntosh apples are example of commercially important fruits that come from plants produced by ____

a. fragmentation b. tissue culture c. somaclonal selection d. grafting e. apomixes

Biology & Microbiology

Each “word” in the mRNA language consists of how

many letters? a. 3 b. 4 c. 5 d. more than 5 e. all of these

Biology & Microbiology

Which is NOT one of the three groups of modern

mammals? a. placentals b. therapsids c. marsupials d. monotremes e. pouched

Biology & Microbiology

The organization of the lac operon, from upstream to downstream sequences, is represented by:

a. repressor gene -> lacZ -> lacY -> lac A b. lacZ -> lacY -> lac A c. lacZ -> lacY -> lac A -> operator -> promoter d. operator -> promoter -> lacZ -> lacY -> lac A

e. promoter -> operator -> lacZ -> lacY -> lac A

Biology & Microbiology