Which of the following is an example of qualitative observation? which of the following is an example of qualitative observation? joseph is observing the color difference in the reaction mixture of each of the test samples to see what types of proteins are present in them. joseph is measuring the color of the reaction mixture colorimetrically to see the concentration of proteins in the sample. joseph is observing the color of the reaction mixture to see whether proteins are present in the given solution. nextreset

the backbone of the dna and rna compound is sugar phosphate.

1. amino acid refers to the fundamental building block of proteins, comprising of an amino group and a carboxyl group.

2. catalyst refers to any substance, which increases the rate of chemical reaction without being used up in the reaction.

3. a complex molecule containing he genetic code is dna or deoxyribonucleic acid.

4. an enzyme refers to a molecule of protein, which is unique in accelerating up a particular chemical reaction in the biological systems.

5. nucleic acid refers to an sequence of sugars, phosphates, and nitrogenous bases, for example, dna and rna.

6. a protein refers to a large, composite organic molecule comprising of a huge number of amino acids associated together with the of peptide bonds.

7. rna refers to a nucleic acid that takes part in the production of proteins.

8. substrate refers to a compound, which takes part in a chemical reaction, and is chemically modified by the reaction.