Questions: contain 1 set of chromosomes.

The question appears to be incomplete, as it only contains a fragment of a sentence: "contain 1 set of chromosomes."

However, based on the provided fragment, I can infer that the question might be asking about cells that contain one set of chromosomes. In biological terms, cells with one set of chromosomes are referred to as haploid cells.

Haploid cells are typically found in the reproductive systems of organisms. In humans and many other organisms, these cells are the gametes, which are the sperm and egg cells. Each gamete contains one set of chromosomes, which is half the number of chromosomes found in somatic (body) cells. When two gametes (sperm and egg) fuse during fertilization, they form a diploid zygote with two sets of chromosomes, one from each parent.

To summarize:

• The cells that contain one set of chromosomes are called haploid cells.
• In humans, these haploid cells are the sperm and egg cells.

If you have a more specific or complete question, please provide it, and I would be happy to give a more detailed answer.