Baking soda is just an element that is to be added to the cake....when baking soda added to the cake mixes with the baking powder,carbon di-oxide is released which gives the cake a spongy look!!!and a fluffy tase to it
Baking powder is what causes the cake to rise.
Yes, baking powder helps your cake rise.
it makes the cake rise in the oven
1 teaspoon of baking powder
You can make a cake without baking powder but it means that your cake won't rise so it will be flat and lifeless therefore I would always use baking powder. 
Cake recipes usually call for baking powder, not baking soda. The baking powder helps it rise. You will have a flat, dense cake without it.
there is no answer
baking powder and baking soda
the function of baking powder is to make it fluffy and soft and along with yeast expands the cake
Baking powder is better.see http://video.answers.com/baking-soda-vs-baking-powder-290159125
Baking powder produces bubbles of carbon dioxide when it is mixed with liquid and again when it is heated. Without the baking powder, a cake is likely to be dense and heavy.
Help make the cake to rise
Depending on the specific recipe, either baking powder, baking soda or both may be used with cake flour.
Without baking powder, the cake doesn't grow, so you'll have a very hard and tough cookie-ish cake.
Baking powder has the chemical name Sodium Bi-carbonate. It is a relatively unstable compound. When it mixes with water, it forms Carbon dioxide gas, which creates bubbles in the cake mixture, and makes it rise.
the purpose of baking powder in a cake is to make it rise and not make it flat and if you put too much of baking powder your cake might burst in the oven/microwave what ever you use
In other to make honey cake it need the volume from baking powder to raise and also baking powder help the cake to form the the honey comb mixture.
baking powder makes a cake rise because of the elements made from that powder. the powder releases gas which slowly dissolves in the texture and makes it rise
No, you cannot, baking powder and baking soda are used for different purposes.
Substituting baking soda for baking powder is not likely to change the taste of the cake, but it could affect whether and how the cake rises. Baking powder has additional ingredients that promote rising that baking soda does not have. Baking soda needs some sort of acid to create the gas that causes the cake to rise. Usually sour milk or buttermilk is used in cake recipes that use baking soda.
Most cake recipes call for baking powder. It will give more lift than soda.
The cake rises, causing it to be lighter and airier.
you will mess your cake up :)