Question

what is the structure for carbohydrates explain !!

Answer 1

@Callisto

Answer 2

@TuringTest

Answer 3

please explain how can i present this in my science class

Answer 4

to 34 students

Answer 5

no

Answer 6

please help me

Answer 7

what is the structure for carbohydrates explain

Answer 8

explain how can i present this in my science class

Answer 9

hmm.. am bad at carb n nutrients chandra..sowieee... have u tried google?

Answer 10

ya

Answer 11

how can i explain in my class

Answer 12

i should tell the whole thing

Answer 13

juz do ur own mind map kinda thingy chandra?

Answer 14

This is going to take some time, but please be patient :)

Answer 15

ok 100 percent patient

Answer 16

thanks for helping @Frostbite

Answer 17

Carbonhydrates have the name becuase it contain carbon and hydrogen and oxygen in the same amount as found in water (hydrat). We say that carbonhydrats have the bruttoformula (CH2O)n (however not all molecules with the bruttoformula (CH2O)n carbonhydrats) , where n belongs to the natural numbers. For an example glucose that have the formula C6H12O6 is where n=6. The veriable n also give posibility to naming the carbonhydrats as the following:

Number of C atoms Name
3 triose
4 tetrose
5 pentose
6 hexose
7 heptose

Carbonhydrats are further characterized by that all the C-atoms is placed in a non-branshed chain and that on each C -atom is placed a hydroxid-group. This is for all carbon beside the 1. or 2. carbon atom where there can be placed a dobbelt bound oxygen. In glucose the dobbelt bound oxygen is on the first C-atom and is a part of a aldehydegroup, if the dobbelt bound O is on the 2. carbon it is a ketongroup. Carbonhydrats with a dobbelt bound O on the first atom we call a aldoses and on the 2. atom we call them ketoses

(PART 1)

Answer 18

i need the structure @Frostbite

Answer 19

explain the structure

Answer 20

alright i go to the stereochemistry...

Answer 21

but that is a part of the structure.

Answer 22

ok byre

Answer 23

srry cldnt help chandra..bt am reli bad at carbs...hope frost ans helped..:)

Answer 24

To discribe the stereochemistry of monosaccharides look opon glycerolaldehyde that is a triose and therefore a carbonhydrat that contain 3 C-atoms. The middel carbon atom (nr. 2) is surrounded by 4 diffrent groups (DRAW IT AND SEE IT FOR YOUR SELF!). The 4 groups can be spacious be placed in 2 diffrent ways relative to each other. Therefore can glycerolaldehyde be found on 2 diffrent forms that is each others mirror image (they are chiral). Vi sya that they are each others mirror image isomere. the C-atom (nr. 2) that is surrounded by the 4 groups is called a asymmetric carbon (alpha carbon). The two isomers are in the most chemical properites the same beside they turn light, that is polarized in each direction.
(part 2/4)

Answer 25

One is turning the polarized light to the right; this form also have the hydroxid group on the right side and is therefor called D-glycerolaldehyde. D is standing for dexter (right from latin). Likewise the L in L-glycerolaldehyde for laevus (left in latin). in glucose there are 4 asymmetric carbon (nr. 2-5) we can therefor say that there are 2^4=16 diffrent kinds of hexoses, that 2 and 2 are each others mirror image, so that there are 8 D forms and 8 L forms. If you want to name a larger carbonhydrate like a hexoses, you will name it, so that the 2. lowerst carbon (the asymmetric carbon with highest nr.) will determine if the carbonhydrat is in L or D form all after where the hydroxid-group is. All in all the naming is after the molecules strcture and not how it turn polarized light! Most carbonhydrats found in nature is on D-form. Ketoses always have 1 less asymmetric carbon than aldoses. we can therefor conclude that there only exist half so many ketoses than aldoses.´
(part 3/4)

Answer 26

The carbon atoms in monosaccharides usualy don't tend to say in a linear chain and some may draw them. There is a angle on about 100 degrees between the bindings in the carbon-chain. In the larger monosaccharides (5 or more C atoms) the 2 ends of the carbon chain tends to get so close to each other that a bound can be created between the the two ends so that a ring is created. The ring is always made between the O-atom in that hydroxid-group that have the 2. highest carbon atom (for an exampel 5 in hexoses and 4 in pentoses) and the carbon atom where the dobbelt bound oxygen is. When the ring is being created it is the hydrogen atom from the hydroxid group move over to the dobbelt bound oxygen, in the same time a new bound between the oxygen from the hydroxid-group and the C-atom, where the dobbelt oxygen was on, made. In this way a ring have been created that contain 5 carbon atoms and 1 oxygen, but at the same time a new hydroxid group have been formed. The carbon that have got the hydroxid group have become asymmetric so we have 2 new forms. The hydroxid group can be placed to the right (shown like up) and is called a α-form, or to the left (shown like down) and is called a β-form. Glucose is the hexoses, with lowest percentage of molecules on aldehydeform. Among the other hexoses the ring is less stable and they therefore stay on aldehydeform.
(Part 4/4) see attachment.

Answer 27

And there is A LOT more about carbohydrates structure.