Which of the following features is/are present in mitochondria but not in chloroplast?

The major difference between mitochondria and chloroplast is that the latter contains thylakoid membranes and pigment molecules, whereas the mitochondria membranes contain respiratory enzymes not found in chloroplast membranes... Chloroplasts essentially are those parts of plants cells and algae where photosynthesis takes place... Mitochondria on the other hand are located in the cytoplasm of cells which have a nucleus... These turn nutrients into molecules that fuel the cells... Mitochondria cells are surrounded by an envelope of two membranes. The membrane on the outside is smooth while the other one is marked by what are called cristae... Mitochondria membranes contain respiratory enzymes not found in chloroplast membranes. Mitochondria are found in both plants and animals.. It seems like it should be II and III - but that is not a choice...

It isn't DNA; DNA is found in the nucleus. Ribosomes are organelles. So, D.