The best definition of organic material is anything that contains
A) carbon and oxygen covalently bonded.
B) carbon, oxygen, and hydrogen covalently bonded.
C) carbon and hydrogen covalently bonded.
D) hydrogen covalently bonded.
E) carbon, nitrogen, and hydrogen covalently bonded.
C) carbon and hydrogen covalently bonded.
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Matching
A) Syndesmosis B) Gomphosis C) Symphysis D) Suture 18) Joint found only in the skull. 19) Tooth in socket. 20) Bones are connected exclusively by ligaments. 21) Bones united by fibrocartilage.
In the eyes of most species, the _________________________________________ is the brightly colored, iridescent, reflecting tissue layer of the choroid
Fill in the blank(s) with correct word
Which of the following is not true of the spinal cord?
A) It interacts with the muscular system to provide involuntary movement. B) It interacts with the digestive system by receiving sensory signals from the stomach. C) It interacts with the urinary by receiving sensory signals from the bladder. D) It interacts with the muscular system by initiating voluntary movement of skeletal muscles.
Which class of major histocompatibility molecules is specific to antigen-presenting cells?
A. MHC class II B. MHC class I