Starch is a very large molecule made up of many glucose molecules bonded together. Does this...

Starch is a very large molecule made up of many glucose molecules bonded together. Does this help explain the results of this experiment? Explain how.

dialysis tubing with starch and glucose

Expert Solution

Dialysis tubing is the experiment to separate the large and small molecules from a solution based on their ability to pass through a semi-permeable membrane.

After passing through dialysing tube, glucose, being smaller molecule, can pass through the tube but the starch molecules can not. We can test for the presence of glucose molecule in the distill water outside the dialysing tube and presence of starch molecules left in the dialysing tube. Presence of Starch can be tested through addition of Iodine drops in the dialysing tube, which will give blue-black colour with it. Glucose, being a reducing sugar, can be tested with Benedict's reagent, which will give brick red or orange colour with it.

Presence of glucose in distill water indicates that it is a small molecule, inability of starch to pass through the dialysing tube indicates that it is a complex molecule.Addition of saliva in the starch group can be used to test the presence of glucose molecules in the starch.

gladiator answered 2 years ago

In cells especially those in the liver, glucose molecules are bonded together to form glycogen. Why?

When atoms are tightly bonded together or not so tightly bonded together, how does this tie...

When atoms are tightly bonded together or not so tightly bonded together, how does this tie with the properties of materials? Such as ductile, elasticity, strength, hardness, etc....

A molecule is two or more atoms that are bonded together. For instance, oxygen is rarely...

A molecule is two or more atoms that are bonded together. For instance, oxygen is rarely found as just an O atom, but instead is found as two atoms bonded together in one molecule, O2. Both O and O2 are elements because they are composed of only one type of element. A compound is composed of two different types of elements. Can you have an atom of a compound like you can an element, or can you only have a...

1. For each glucose molecule that is oxidised in aerobic respiration approximately how many molecules of...

1. For each glucose molecule that is oxidised in aerobic respiration approximately how many molecules of ATP are produced? 2. Which of the following is a product of aerobic respiration in a yeast cell? a. ADP. b. ATP. c. cytochrome c. d. ethanol. e. NADPH. 3. The energy necessary to produce ATP during oxidative phosphorylation is provided by which of the following? a. the phosphorylation of cytochrome c. b. GTP produced during the citric acid cycle. c. lactic acid metabolism....

Compare how many ATP molecules can be maximally formed by the breakdown of a glucose molecule...

Compare how many ATP molecules can be maximally formed by the breakdown of a glucose molecule in a cell lacking mitochondria, a cell that has mitochondria with ion channels specific to protons in its inner membrane, and a cell that has normal mitochondria. Justifications for the calculations must be given and full accounts of the calculations must be provided so that the number of ATP molecules can be traced back to relevant reactions / processes.

How many NADH molecules are generated by the complete breakdown of one molecule of glucose through...

How many NADH molecules are generated by the complete breakdown of one molecule of glucose through glycolysis, Reaction zero (Pyruvate dehydrogenase complex) and the Kreb's cycle? a) 5 b) 8 c)10 d)12 Which of the following is not a main direct input or output of the TCA cycle? a) CO2 b) GTP c) FADH2/QH2 d) ATP Which enzyme is NOT used in gluconeogenesis? a) GAP dehydrogenase b) pyruvate kinase c) aldolase d) fructose bisphosphatase Which molecule would most effectively promote...

Put together a life story of a protein molecule (where is it made, what does it...

Put together a life story of a protein molecule (where is it made, what does it do while functional, how is it degraded, etc.). Use bullet phrases to save time.

Consider the oxidation of a single glucose molecule. How many carbons from that glucose molecule remain...

Consider the oxidation of a single glucose molecule. How many carbons from that glucose molecule remain to be oxidized following a single turn of the TCA cycle?

The net gain of ATP molecules per molecule of glucose in the reactions of glycolysis is...

The net gain of ATP molecules per molecule of glucose in the reactions of glycolysis is 2. What is the net gain of ATP molecules per monosaccharide consumed in glycolysis for the following sugars? Fructose: Mannose: Galactose:

1. What are starch molecules made of? 2. What are the common symptoms of type I...

1. What are starch molecules made of? 2. What are the common symptoms of type I diabetes? 3. What role does the pancreas play to regulate blood sugar? 4. How do you reduce your intake of refined carbohydrates? 5. What is the difference between soluble fiber and insoluble fiber? 6 .Define the two types of diabetes?

Question