Genetic goitrous cretinism and alkaptonuria are metabolic disorders in the ____ pathway
a. nucleic acid
b. thalassemia
c. phenylalanine
d. paraoxonase
e. lipid biochemical
c
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Dietary hypothyroidism has been decreased in recent years by the use of ____
a. vitamin D b. multivitamins c. Penicillin d. thyroxin injections e. iodized salt
How might global warming affect an animal species that has narrow temperature requirements?
A) It may cause the expansion of the species' range. B) It may cause the extinction of the species. C) It may reduce the diseases that threaten the species. D) It may have no effect on the species.
Their cytoplasm includes endoplasmic reticulum:
A. Eukaryotes B. Prokaryotes C. Both D. Neither
Which of the following phenomena produces magnification?
A) the wavelength of a radiation source B) the refraction of radiation as it passes through a lens C) the thickness of a microscopic specimen D) the numerical aperture of a lens E) the length of an objective lens