Progressive chromosomal changes as cancer develops are related to the loss of the ability to repair ____________________ in cancer cells
Fill in the blank(s) with correct word
DNA damage
DNA
damage
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Iron-oxidizing bacteria grow better in alkaline environments where protons are less likely to abiotically convert Fe2+ into Fe3+
Indicate whether the statement is true or false.
Despite dramatic differences in appearance, size, and behavior, you are surprised to find that two organisms you have been studying are able to reproduce successfully, and produce fertile offspring. Which of these choices is the largest taxonomic category that these two organisms share in common?
a. subspecies b. species c. family d. genus
How are receptor tyrosine kinases and steroid hormone receptors similar?
A. Both are transmembrane proteins with a single transmembrane domain B. Both have a site for binding ligand C. Both are activated by autophosphorylation D. Both have a DNA-binding domain
In the human immune system, resistance to a particular foreign agent, based on repeated exposure to the agent, is known as
A) Acquired immunity B) Innate immunity C) Natural immunity D) Nonspecific host resistance