A patient presents with severe colitis associated with an overgrowth of Clostridium difficile in the lower bowel. The most likely cause of this condition is
A. botulinum food poisoning
B. a stomach ulcer
C. a compromised immune system
D. antibiotic therapy
E. mechanical blockage of the large intestine
Ans: D. antibiotic therapy
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Environmental genomics is sometimes called metagenomics.
Answer the following statement true (T) or false (F)
The difference between latex agglutination and hemagglutination is:
a. the type of particle used to carry the anti-body. b. the type of target organism involved. c. that hemagglutination is less specific but more sensitive. d. that hemagglutination procedures are temperature sensitive.
Centriole replication occurs during ____
a. G1 phase b. S phase c. G2 phase d. prophase e. telophase
What changes should result from using stem cells in therapeutic cloning?
A) healthy tissues B) new genomes C) model organisms D) reproductive clones