It is currently estimated by the American Cancer Society that only about 10% of all people with melanoma have a family history of the disease. What factors might contribute to the development of melanoma in the other 90% of patients?
A. exposure to solar radiation
B. mutations in a melanocyte
C. exposure to environmental mutagens
D. All of the answer choices are correct.
E. None of the answer options is correct.
D
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Organisms whose sole source of carbon for growth is CO2 are called ________.
A. autotrophs B. consumers C. saprophytes D. lithotrophs E. decomposers
Which of the following statements best describes the condition of fungal spores?
A. Sexual and asexual spores are both haploid. B. Sexual and asexual spores are both diploid. C. Sexual spores are haploid and asexual spores are diploid. D. Sexual spores are diploid and asexual spores are haploid. E. Haploid asexual spores fuse to form diploid sexual spores.
Protein misfolding causes
a. Creutzfeldt-Jakob disease. b. arthritis. c. immunodepression. d. schizophrenia. e. tuberculosis
Functions of the glycocalyx include all of the following EXCEPT
A) biofilm formation. B) increased virulence. C) source of nutrition. D) protection against dehydration. E) binary fission.