Which of the following is not an organic compound?
A) CH4 B) Na2HPO3(H2O)5
C) C3H7O2N D) C16H18N3ClS
B
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During metaphase of mitosis, chromosomes first condense and become visible when stained and viewed under a microscope.
Answer the following statement true (T) or false (F)
A contraction that generates enough force to move a load is known as ________, whereas one that generates force that equals the load is known as ________.
A) isotonic, eccentric B) isotonic, isometric C) isometric, isotonic D) isometric, eccentric E) isotropic, isometric
Choose the correct description of a typical medium-sized vein.
A) In these vessels, the thin tunica media is surrounded by a thick tunica externa composed of mostly collagen fibers. B) Ranging from 2 mm to 9 mm in diameter, its thin tunica media consists of one to two layers of smooth muscle cells. C) It has a diameter of approximately 0.4 cm and has more smooth muscle cells and fewer elastic fibers. D) It ranges from 2 mm to 9 mm in diameter, and the relatively thick tunica externa has longitudinal bundles of elastic and collagen fibers. E) It has a diameter up to 2.5 cm, and its tunica media is dominated by elastic fibers rather than smooth muscle cells.
Which type of neuroglia is phagocytotic and engulfs bacteria?
A. Schwann cells B. Astrocytes C. Oligodendrocytes D. Microglia