Question 8 II Pause
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Question 8
What is the function of the digestive system?
А to chemically break down foods into C, H, O, and sometimes N and S so they can be absorbed
B
to mechanically and chemically break down large molecules so they can be absorbed
С
to produce minerals and vitamins needed by the body
D
to provide immediate energy for cell use

answer; i believe that the correct answer is (lung);

request for reexamination

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.

answer; synapse;