The middle layer of the skin
a. is called the dermis.
b. is primarily connective tissue.
c. contains collagen fibers.
d. is all of the above.
a
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Agents that are static and, therefore, do not kill infecting microorganisms are not useful as chemotherapeutic agents.
Answer the following statement true (T) or false (F)
When tumor cell DNA is examined from people at different stages of the same cancer type, mutations that are common to all of them
A) act early in the disease. B) act late in the disease. C) acted on an initial cell and then reverted to wild type. D) entered the cells on the same type of virus.
What are the most abundant organisms in the world?
What will be an ideal response?
What happens when you place a bacterial cell into a hypertonic solution?
A) lysis B) no effect on the cell C) plasmolysis D) The cell will burst. E) The cell will swell.