One key difference between carbohydrates and proteins is: the carbohydrate molecule lacks nitrogen. the protein molecule contains more stored energy. the carbohydrate molecule is in butter. only the protein molecule contains iron. only the carbohydrate molecule can form long chains.

Option A, the carbohydrate molecule lacks nitrogen

Explanation:

Carbohydrates are group of organic compounds that contain three essential elements -

a) carbon

b) hydrogen

c) oxygen

While a protein is polymer of amino acids. An amino acid consists of following essential components

a) An amino group (−NH2) that has nitrogen molecule

b) An acidic carboxyl group (−COOH)

c) An organic R group that primarily has CHO elements

Hence option A is correct

step 1 ammonium can be absorbed by plants, but some is converted into nitrates which are better for plants to absorb. this is called nitrification. 2. step 2 the deer eats the plants and uses the nitrogen-containing proteins for cell growth. 3. step 3 bacteria in the soil conduct nitrogen fixation to convert nitrogen gas from the atmosphere into ammonium. 4. step 4 some of the nitrates are absorbed back into plants, but denitrification breaks down the nitrates into nitrogen gas released back into the atmosphere. 5. step 5 nitrogen is found in the urine, which gets broken down into ammonium through the process of ammonification. 6. step 6 plants absorb the ammonium and begin assimilation, the process to add the nitrogen to protein.

on the planet jupiter, the acceleration due to gravity is approximately 26 m s2 , roughly 2.7 times the acceleration due