What are the three unifying characteristics of chordates?

A) Dorsal nerve chord, radial symmetry, three layers of cells

B) Water vascular system, backbone, gill slits

C) Exoskeleton, notochord, lungs

D) Notochord, gill slits, dorsal nerve cord

How does evolution explain the differences and similarities between a human and a chimpanzee?

One of the structures in the nucleus (of eukaryotic cells that are made up of dna is called a (n.

Match the nervous system disorders with their descriptions [a degenerative disease that affects older people] [affects voluntary muscles] [a burst blood vessel in the brain] [a stationary blood clot] 1. ALS 2. Cerebral thrombus 3.

How does cell technology affect government? New government agencies must be created to fund and regulate each type of technology. A new technology may reduce the amount of money that a hospital needs to operate.

In order to identify a specific restriction fragment using a probe, what must be done? A) The fragments must be separated by electrophoresis. B) The fragments must be treated with heat or chemicals to separate the strands of the double helix.

How might a scientist a determine whether trait sex-linked by observing the offspring of several genetic crosses

An individual who has an eating disorder along with intense thirst and wildly varying body temperatures may have a dysfunction of the medulla. hypothalamus. thalamus. pons. brainstem.

What consists of loose connective tissue that binds the tunica mucosa to the next layer

I tend to have an inquiring mind, and i want to know more about how water moves within the plant body. i take a common houseplant and cut the stem off about 1 inch from the soil surface.

How are mosses and horsetails similar to ferns