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Chapter 2

Carbohydrates

QuestionsAnswers
This MICROBIOLOGY stack covers the section of chapter 2 entitled CARBOHYDRATES. (blank)
Q: Give three examples of the important role carbohydrates play. A: Carbohydrates are a common source of food and energy, they form part of nucleic acids, and they form part of the bacterial cell wall.
Q: Carohydrates contain carbon, hydrogen, and oxygen in what ratio? A: 1:2:1 ratio.
Q: What is a monosaccharide? A: A single carbohydrate molecule.
Q: What is a disaccharide? A: A Short chain of carbohydrates.
Q: What is a polysaccharide? A: A large molecule made of carbohydrate molecules.
Q: Of the monosaccharides, name the two most common 5 carbon sugars. A: Ribose and deoxyribose.
Q: Of the monosaccharides, name the three most common 6 carbon sugars. A: Glucose, fructose, and galactose.
Q: What is lactose? A: A disaccharide containing GLUCOSE and GALACTOSE.
Q: What is sucrose? A: A disaccharide containing GLUCOSE and FRUCTOSE.
Q: What is maltose? A: A disaccharide containing GLUCOSE and GLUCOSE.
Q: What do you get when you create a disaccharide using glucose and galactose? A: Lactose.
Q: What do you get when you create a disaccharide using glucose and fructose? A: Sucrose.
Q: What do you get when you create a disaccharide using glucose and glucose? A: Maltose.
Q: What is the most abundant organic molecule on earth? A: Cellulose.
Q: Cellulose, glycogen, and dextran are all made up of _______ subunits. A: Glucose... BTW, so is starch.
Q: What is dextran? A: Dextran is a storage molecule for carbon and energy for some bacteria.
Q: If cellulose, glycogen, and dextran are all made up of glucose, how do we differentiate between them? A: Their branching structures are different.
Q: True or false? Lactose, sucrose, and maltose are all considered dimers. A: True! It must be true, I took note of it during the lecture.
Created by: PCC Microbiology
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