Bone is composed of
A) living cells that secrete a surrounding matrix.
B) a hard composite of phosphate and sodium ions.
C) channels containing lymphoid tissue.
D) hardened cartilage.
Answer: A
You might also like to view...
Quantitative traits
A. are polygenic. B. encode genes for continuous traits. C. are influenced by the environment. D. are both polygenic and influenced by the environment. E. are correctly described by all of these statements.
The first eukaryotic fossils are dated to about
a. 3.8 billion years ago. b. 2.1 billion years ago. c. 1.5 billion years ago. d. 750 million years ago. e. 201 million years ago.
Much of the work of breaking down the food we ingest is done by our
(a) stomach (b) teeth (c) gut microbiome (d) esophagus
In 20-40% of men past puberty, the mumps virus can cause
a) orchitis. b) liver damage. c) fever. d) death.