Sure, let's go through each part step-by-step to arrive at the answer.
### Filling Column A
Elements in Molecules
- Carbohydrates are composed of carbon, hydrogen, and oxygen.
- Proteins are composed of carbon, hydrogen, oxygen, and nitrogen (sometimes sulfur).
- Nucleic Acids are composed of carbon, hydrogen, oxygen, nitrogen, and phosphorus.
So according to the given table:
- In the row for "Carbohydrates," it already lists: carbon, hydrogen, oxygen.
- For Proteins, we need to fill in A with: carbon, hydrogen, oxygen, and nitrogen.
- For Nucleic Acids, we need to fill in B with: carbon, hydrogen, oxygen, nitrogen, and phosphorus.
### Filling Column C
Building Block
- The monomer of carbohydrates is monosaccharides (simple sugars e.g., glucose).
- The monomer of proteins is amino acids.
- The monomer of nucleic acids is nucleotides.
So, for the row "Building Block":
- For Carbohydrates, we already have C, which should be: monosaccharides.
- For Proteins, D should be: amino acids.
- For Nucleic Acids, E should be: nucleotides.
Now, let's fill in the table accordingly:
[tex]\[
\begin{tabular}{|l|c|c|c|}
\hline \multicolumn{3}{|c}{} & \multicolumn{2}{c|}{\begin{tabular}{c}
Carbo- \\
hydrates
\end{tabular}} & Proteins & \begin{tabular}{c}
Nucleic \\
Acids
\end{tabular} \\
\hline \begin{tabular}{l}
Elements in \\
Molecules
\end{tabular} & \begin{tabular}{c}
carbon \\
hydrogen \\
oxygen
\end{tabular} & \begin{tabular}{c}
carbon \\
hydrogen \\
oxygen \\
nitrogen
\end{tabular} & \begin{tabular}{c}
carbon \\
hydrogen \\
oxygen \\
nitrogen \\
phosphorus
\end{tabular} \\
\hline \begin{tabular}{l}
Building \\
Block
\end{tabular} & \begin{tabular}{c}
monosaccharides
\end{tabular} & \begin{tabular}{c}
amino acids
\end{tabular} & \begin{tabular}{c}
nucleotides
\end{tabular} \\
\hline
\end{tabular}
\][/tex]
