Final answer:
Liver, bone, nerve, and muscle cells are called somatic cells, and sperm and egg cells are called gametes. Somatic cells are diploid with double the chromosome number of haploid gametes.
Step-by-step explanation:
Liver cells, bone cells, nerve cells, and muscle cells are called somatic cells. Sperm cells and egg cells are called gametes. While somatic cells contain two copies of each chromosome (one from each parent) and are referred to as diploid, gametes contain only one copy of each chromosome, making them haploid. Therefore, somatic cells have double the number of chromosomes compared to reproductive cells, which ensures that when a sperm and egg unite, the resulting zygote has the correct number of chromosomes.