Which cells in your body undergo cellular respiration? Select one:
a. your brain cells
b. your skin cells
c. your heart cells
d. every cell in your body

Diagram of the evolution of land plants?

Which of the following particles always has a positive charge? a. electronb. neutron c. proton d. ion

Which of the following is the function of the nociceptors? a. detecting odors in the nose b. detecting painful stimuli c. detecting central body temperature d. detecting touch and pressure