Which element gives water its ability to create either a weak acid or a weak base, depending on the solute being dissolved?
A) oxygen
B) hydrogen
C) oxide group
D) hydroxyl group
Ans: B) hydrogen
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An animal with bilateral symmetry:
a. has no defined body sides b. usually has no body cavity c. has body parts repeated around a central axis d. has left and right sides and usually displays cephalization e. is not typical of animals with a three-layer body plan
In the above diagram, the ____ is (are) labeled
with the letter "J".
a. bronchi b. bronchioles c. diaphragm d. alveoli e. trachea
Are all fungi prokaryotes?
A) Yes, all fungi are prokaryotes. B) No, some are prokaryotes, some are eukaryotes. C) No, they are all eukaryotes. D) No, they are neither prokaryotes nor eukaryotes.
Which is a definition of a radioresistant tumor?
a. tumor is completely eradicated by chemical therapy b. tumor requires large doses of radiation to produce death of cells c. Tumor in which irradiation causes death of cancer cells without damage to surrounding tissue d. tumor is not significantly affected by drug treatment e. tumor is resistant to surgical intervention