The "code" for physical traits is contained in a molecule called Segments of this molecule that code for specific
are called
In order to conserve space and protect the molecule, DNA wraps around proteins to form
What a cell is about to divide, DNA wraps up even tighter into
Complex organisms have many molecules of DNA in every cell, and each molecule is commonly referred to as a
, even if it is not wrapped up as one.

DNA

proteins

genes

chromatin

chromosomes

chromosome

Explanation:

The “code” for physical traits is found in a molecule called DNA. Segments of this molecule that code for specific proteins are called genes. In order to conserve space and protect the molecule, DNA wraps around proteins to form chromatin. When a cell is about to divide, DNA wraps up even tighter into  chromosomes.  Complex organisms have many molecules of DNA in every cell, and each molecule is commonly referred to as a chromosome, even if it is not wrapped up as one.

the transfer of energy between two molecules spaced just nanometers apart plays a key role in many technologies, including photovoltaics, quantum information systems, lighting, and sensors, as well as in biophysics to measure nanometer distances and in photosynthesis. but an open question in this area is what effect, if any, the surrounding photonic environment has on this nanoscale energy transfer. by designing and performing a carefully controlled experiment to answer this question, scientists have settled the debate and found clues to improving the efficiency of many of the technologies that rely on this process.

explanation:

the answer is:

carbon dioxide