Final answer:
Prokaryotic cells do have DNA in the form of a circular chromosome located in the nucleoid region and can have structures like flagella, thus option (c) is true. Options (a) and (b) concerning the absence of DNA and the inability to photosynthesize or respire are false.
Step-by-step explanation:
The statement concerning prokaryotes that is true is that prokaryote flagella are similar in structure to eukaryote flagella. Prokaryotic cells, including the domains Bacteria and Archaea, do not have a nucleus or membrane-bound organelles such as mitochondria or chloroplasts. However, they do have chromosomes (circular DNA) in the nucleoid region, ribosomes for protein synthesis, and in some cases, structures like flagella for locomotion and pili for attachment to surfaces. Some bacteria are capable of photosynthesis or carrying out cellular respiration. Therefore, options (a) and (b) are false; prokaryotic cells do have DNA, and not all prokaryotic cells lack the functionality to photosynthesize or respire.