Which one of the following is the form energy takes that is usable by cells? A. sugar

B. Toddlers

C. ATP

D. lightning

What is the phylum of soft bodied animals with a true bosy cavity and a three part body consisting of a foot visceral mass and a mantle

Which statement describes an endocrine function rather than an exocrine function? a. salivary glands release saliva into the mouth. b. sweat glands release sweat onto the skin c. the pineal gland releases melatonin into the blood. d. esophageal glands release mucus into the esophagus.

What causes darkening of the skin as melanin production increases