The type of bone tissue that is found in the middle portion of a long bone and has lacunae arranged in concentric circles around central canals that contain blood vessels and nerves is
A. yellow marrow.
B. red marrow.
C. spongy bone.
D. compact bone.
E. fibrous membrane.
Answer: D
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Pioneering species inhabiting a disturbed area alter the environment and create new habitats
a. False, the habitat cannot be changed by a living organism. b. True, organisms moving to a disturbed area use the resources and can themselves be a resource or can provide resources such as shade. c. False, pioneering species are very short-lived and so do not invest enough time to change the habitat
Tin is commonly found:
a. in coastal sediments. b. in oceanic sediments. c. dissolved in seawater. d. in manganese nodules. e. at the bottom of trenches.
Which of the following is TRUE at the end of telophase I in corn (2n = 20)?
A. Each cell has 20 chromosomes. B. Each chromosome is paired with its homologue. C. Centromeres connect homologous chromosomes. D. Each cell is diploid. E. Centromeres connect sister chromatids.
A young woman begins to experience swelling and reddening of the skin. Soon she is also having difficulty breathing. What treatment most likely to be prescribed?
A. corticosteroids B. cyclophosphamide C. antihistamines D. methylprednisolone E. epinephrine