What is cartilage composed of?
A. Chondroitin and collagen fibers
B. Osteocytes and calcium phosphate
C. Chondroitin and calcium phosphate
D. Collagen fibers and osteocytes
E. Osteocytes and glycoproteins
Answer: A
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Familial Down syndrome is a result of
A. inversion. B. deficiency. C. gene duplication. D. translocation
Antigens are
A. proteins produced by plasma cells that stimulate the clotting of blood. B. proteins produced by virus-infected cells that stimulate an immune response. C. foreign molecules that bind to white blood cells through specialized receptors, leading to the proliferation of lymphocytes. D. chemicals that enhance all lymphatic organs.
Bears and dogs are:a
chordates. b. mammals. c. carnivores. d. chordates and mammals. e. chordates, mammals, and carnivores. What will be an ideal response?
An animal that maintains a constant internal body temperature by generating metabolic heat is termed a:
What will be an ideal response?