Biology/biology -- human body
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Question
1. Rice is a form of starch ..is porridge a form of starch too?
2. Food is pushed down the oesphagus by the peristalsis, is water been push down or it just flows down the oesphagus?
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1. Porridge is indeed a form of starch. Porridge is made from oats, of course, meaning that it contains a large amount of carbohydrates as its main component. A starch has a specific definition, however, apart from just being a carbohydrate: a starch is a water-insoluble, complex carbohydrate made of amylose and amylopectin; both of these are large molecules themselves made of glucose. Starches are the main way in which plants store their energy, oat included.
2. Food and water both pass through the esophagus by peristalsis. Water is pushed along the length of the esophagus by periodic waves of contraction just like with food, though water tends to move more quickly than food.
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John Locke
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I will answer all biology-related questions through the undergraduate level. I will explain unclear concepts and suggest approaches to solving problems, but would prefer not to completely solve homework problems for you. If you are completely stumped on homework, tell me what you already know and I will help you as much as possible. Please do not ask me for ideas on school research projects; part of research is determining a suitable area of investigation, and that's not a task that should be completed by someone else. Please don't simply send me your homework for solutions. If you are having difficulty after you have started an analysis, I will be happy to direct your thinking; in particular, I would prefer to not simply solve pedigrees for students, but I will be happy to assist in solving pedigrees that you have already started. If you don't understand how to analyze a pedigree, I'd highly recommend watching this video, in which a biology professor explains the basic concepts of pedigree analysis: http://www.youtube.com/watch?v=HbIHjsn5cHo
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I have a BS in Bioengineering with a concentration in Chemical Engineering (which included a heavy focus on biology), and have taught biology, biochemistry, and related subjects for some time now.
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