1 Place the following events in sequence:
A) Food enters your large intestines
B) Food enters your small intestines
C) Food enters your esophagus
D)Food enters your mouth
E) Food enters your stomach

D; C; E; B; A

Explanation:

The mouth is the first part of the gut (gastrointestinal tract). When we eat, food passes down the gullet (oesophagus), into the stomach, and then into the small intestine. The small intestine has three sections - the duodenum, jejunum and ileum.

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.

whats the drop down answers ?

explanation: