What Is the First Part of the Small Intestine That

question 66

Multiple Choice

What is the first part of the small intestine that receives food from the stomach?

• A)duodenum
• B)ileum
• C)jejunum
• D)cecum

---

Definitions:

Molecular Phylogeny

The analysis of the molecular structure of DNA, RNA, or protein sequences to determine genetic relationships and evolutionary histories among different species.

Amino Acids

Organic compounds serving as the building blocks of proteins, crucial for life and involved in various metabolic processes.

Orthologs

Genes in different species that evolved from a common ancestral gene by speciation and retain the same function in the course of evolution.

Homoplasy

Homoplasy refers to a phenomenon in evolutionary biology where similar traits or structures arise independently in different lineages, not due to common ancestry.