In cancer cells there is an increase in
a. fermentation.
b. proto-oncogene activity.
c. cell division.
d. all of these activities.
e. two of these activities
E
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The most common nationally notifiable infectious disease in the United States is:
A) chlamydial genital infections. B) gonorrhea. C) the common cold. D) tuberculosis.
Conidia are formed
A. asexually at the tips of special hyphae B. during sexual reproduction C. by all types of fungi except water molds D. only when it is windy and dry E. as a way to survive a harsh environment
Which of the following is true of an asymmetric carbon atom?
A) Only amino acids have asymmetric carbon atoms. B) A carbon with hydrogens attached at two locations is usually asymmetric. C) A carbon with hydrogens attached at three locations is usually asymmetric. D) Asymmetric carbon atoms create stereoisomers. E) Molecules may have only one asymmetric carbon atom.
You are looking at an unknown cell under a microscope that has 22 chromosomes plus 2 X chromosomes. Which of the following is the most likely identity of this cell?
A) a skin cell from a human female B) an egg from a human female C) an epithelial cell from a male chicken D) an eye cell from a female grasshopper