In the process of aerobic respiration, the krebs cycle (citric acid cycle) occurs in the a. chloroplasts. b. nuclei. c. lysosomes. d. mitochondria.

What do animals wth echolocation have in common other than echolocation

What is the answer for the complicated molecules that make up living things usually contain carbon. why is carbon so important in these molecules?

The nervous system interacts with the endocrine system by a. using hormones as connections b. sending nerve impulses directly to glands c. using neuroendocrine cells as connections d. sending neurotransmitters directly to neurons