Question

1. genes can best be described as:

a part of the protein that is made of dna and provides all of the
instructions a cell needs to keep the body alive
a strand of genetic material that can leave the cell to provide directions
to proteins in the bloodstream
a part of a cell that provides the instructions proteins need to make dna
a part of a chromosome that provides the instructions cells need to
make a protein

Explanation:

To determine the correct description of genes, we analyze each option:

• First option: Genes are not part of proteins; proteins are made from gene instructions, so this is incorrect.
• Second option: Genetic material (like DNA with genes) does not leave the cell freely to direct proteins in the bloodstream; this is inaccurate.
• Third option: Genes provide instructions to make proteins, not for proteins to make DNA; this is reversed.
• Fourth option: Genes are segments of chromosomes (which are made of DNA) and they carry the instructions for cells to synthesize proteins. This matches the scientific definition of a gene.

Answer:

D. a part of a chromosome that provides the instructions cells need to make a protein