3. выбрать краткий ответ: 1. do carbohydrates contain elements of carbon, hydrogen and oxygen? a) yes, they are. b) yes, they do. 2. all carbohydrates fall in group of sugars, don't they? a) yes, they are. b) yes, they do. 3. can non-reducing carbohydrates be hydrolyzed by boiling with a little dilute acid? a) yes, it is.. b) yes, they can. 4. is the process of hydrolysis of carbohydrates a reversible one? a) no, it isn't. b) yes, it is. 5. can polysaccharides be derived from sugar molecules without condensation? a) yes, they do. b) no, they can't.