Dopamine and serotonin are examples.

Why is the capillary fringe of the zone of aeration similar to a plant's roots? They draw up water. There is nothing similar about them. They are both found in the soil moisture region. They move water downward.

After listening to Janetta's heart for several seconds, her doctor told Janetta that she has an incompetent right atrioventricular (AV) valve. What did Janetta's doctor hear that led to that conclusion?

A change occurs in an environment that lasts for several thousand years and causes changes to the genetic makeup of several species. What can be known about this change?

What is a major difference between eukaryotic dna replication and prokaryotic dna replication?

Does color affect food taste?

Unlike bryophytes, ferns A. have vascular tissue. B. exhibit alternation of generations. C. utilize photosynthesis. D. have to get water from the environment.

Modern cell theory is best described as being based on

The internal iliac arteries supply blood to the A. diaphragm. B. urinary bladder and rectum. C. lower leg. D. spleen. E. reproductive organs.

What cells are made from already existing cells

How is mitosis different in plants and animals? A. In animals, the cell membrane pinches together. B. In plants, the DNA is one circular chromosomes. C. In plants, there are no sister chromatids. D. In animals, a new cell wall forms.