Some possible outcome(s) following exposure to microorganisms may include:
A. The microorganisms become part of resident flora
B. The microorganisms are eliminated by host defenses
C. The microorganisms cause no apparent symptoms, but may shed
D. The microorganisms cause apparent symptoms in infectious disease
E. All of the above
Ans: E. All of the above
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The complex of DNA, RNA, and associated proteins that gives shape to the chromosome is called ____
Fill in the blank with the appropriate word.
Mercury in mercurochrome inhibits growth
A. through competitive inhibition. B. through a reversible action. C. by oxidizing the sulfhydryl groups in cysteine. D. by changing the shape of proteins. E. by oxidizing the sulfhydryl groups in cysteine AND by changing the shape of proteins.
How does epistasis differ from Mendel's principle of dominance?
All of the following statements regarding stem cells are true, EXCEPT
A. Embryonic stem (ES) cells differentiate into pluripotent cells. B. Pluripotent stem may be reverse-engineered from adult stem cells. C. Totipotent stem cells differentiate into embryonic stem cells. D. Totipotent stem cells may differentiate into placental cells. E. Totipotent stem cells may only be harvested from the blastocyst stage.