Which is an example of genetic material that causes cancer?

a. vinyl chloride
b. hydrocarbons
c. diethystillbestrol
d. alkylating agents
e. oncogenes


e. oncogenes

Biology & Microbiology

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Imagine that you have set up a genetic screen to identify E. coli mutants that cannot metabolize the amino acid tryptophan for energy. Beginning with a master plate containing many colonies, you prepare replica plates on medium with glucose or tryptophan as the only energy source. You would look for colonies that _____.

A) cannot grow on either type of media B) can grow on both types of media C) can grow only on the plates with tryptophan D) can grow only on the plates with glucose

Biology & Microbiology

Describe two characteristics of capillaries that aid in their function as the site for exchange between blood and interstitial fluid

What will be an ideal response?

Biology & Microbiology

Cancer cells retain the IF proteins from the tissue of origin even after metastasizing to other tissues. How is this important in the diagnosis and treatment of cancer?

What will be an ideal response?

Biology & Microbiology

Chemical signals that mediate interactions between two or more members of a given species are called ________.

A. competitive exclusions B. pheromones C. hormones D. alarm signals

Biology & Microbiology