Sporadic cancers result from
A) recessive or dominant mutation in a somatic cell.
B) recessive or dominant germline mutation.
C) mutation in a sperm or oocyte.
D) exposure to a cancer-causing virus.
A) recessive or dominant mutation in a somatic cell.
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Which one of the following is not part of the endomembrane system?
A. nuclear envelope B. endoplasmic reticulum C. messenger RNA D. Golgi apparatus
A plot of population size vs time that displays a J-shape is indicative of
A. parasitism. B. exponential growth. C. logistic growth. D. K-selection. E. r-selection.
Coliforms
A. are an informal grouping of enterics. B. ferment lactose. C. include E. coli. D. are used as indicators of fecal contamination. E. All of the choices are correct.
The ____ is an accessory system of vessels and organs that helps balance the fluid content of the blood and surrounding
tissues.
a. circulatory system b. non-circulatory system c. accessory vessel system d. lymphatic system e. heart