The nerves and blood vessels of a human tooth are located in the
a. dentine.
b. pulp cavity.
c. enamel.
d. caries.
e. periodontal membrane.
B
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In bacteria, fungi, and plants the high internal pressure generated by osmosis is counteracted by the mechanical strength of their
A. plasma membranes. B. organelles. C. cytoskeletons. D. cell walls.
In most species, the sex chromosomes have identical genes along their length
A. true B. false
A student has isolated a large compound (macromolecule) from cells. Chemical analysis of the compound shows that it is made up of the following elements: carbon, hydrogen, oxygen, nitrogen, and phosphorus
To which group of macromolecules does this compound most likely belong? A) carbohydrate B) protein C) nucleic acid D) lipid E) aqueous
Synovial joints are used to join together many of the flat bones of the mammalian cranium
a. true b. false