According to cell theory, all cells carry out the functions needed to sustain life. that means all cells must contain
a) dna.
b) a nucleus.
c) organelles.
d) a control center.

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.

Acceleration is a direct result of a.) balanced forces b.) unbalanced forces c.) gravity d.) velocity

Genetic disorders can result when sister chromatids fail to seperate properly. during what phase is this problem most likely to occur?