Which of the following functions is associated with the blood?
A) Delivery of O2 to tissue cells B) Transport of digestive enzymes to the small intestine C) Maintenance of DNA content of egg cells D) Transport of neurotransmitters across synapses E) Electrical stimulation of the heart
A) evolved from cyanobacteria B) have been found as symbionts inside mitochondria C) evolved from photosynthetic eukaryotes D) have membrane bound nuclei containing DNA E) are the sites of aerobic respiration