Which statement characterizes fat replacements? a. the use of sugars and proteins as fat replacers results in higher-kcal products. b. trans-fats are much less harmful than cis-fats. c. since it is not absorbed, olestra does not affect the absorption of nutrients. d. unlike a triglyceride, an olestra molecule does not contain fatty acids. e. the vitamins added to olestra are dietarily insignificant.

Will treating a viral infection with antibiotics affect the course of the infection? a) no; antibiotics work by inhibiting enzymes specific to bacteria. antibiotics have no effect on eukaryotic or virally encoded enzymes. b) no; antibiotics do not kill viruses because viruses do not have dna or rna. c) yes; antibiotics activate the immune system, and this decreases the severity of the infection. d) yes; antibiotics can prevent viral entry into the cell by binding to host-receptor proteins.