Many types of cells have stores of lipids in their cytoplasm, usually seen as fat droplets. What is the lipid most commonly found in these droplets?
(a) cholesterol
(b) palmitic acid
(c) isoprene
(d) triacylglycerol
(d)
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Misfolded proteins are involved in four of the five following diseases. Select the exception
a. mad cow disease b. scrapie c. Creutzfeldt-Jakob disease d. bovine spongiform encephalitis e. meningitis
The sympathetic nervous system is part of the
A. limbic system in the brain mediating emotion. B. somatic nervous system. C. central nervous system. D. learning and memory system. E. autonomic nervous system.
What is the molecular clock?
A) The rate at which mutations accumulate in DNA within a species. B) The rate at which new species diverge from ancestral species. C) The rate at which structures no longer needed become small and insignificant. D) The rate at which new discoveries are made about gene homology.
An organic molecule with the empirical formula C6H12O6
A. may have many structural formulae. B. is a carbohydrate. C. is commonly referred to as a sugar. D. All the choices are correct.