Neurulation is the development of the nervous system from the
A. endoderm.
B. mesoderm.
C. ectoderm.
D. hypoderm.
C
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The male homologue to the labia majora is the
A. penis. B. prostate gland. C. scrotum. D. bulbourethral gland. E. testis.
An enzyme
A. has a two-dimensional shape. B. is a protein catalyst. C. increases the activation energy needed in a chemical reaction. D. cannot be denatured. E. is permanently changed in a chemical reaction.
Which type of connective tissue has the least amount of collagen?
a. reticular b. regular fibrous c. irregular fibrous d. elastic
If an element is composed of atoms with an atomic number of 8 and a mass number of 14, then an electrically neutral atom of this element contains
A) 6 protons. B) 6 neutrons. C) 6 electrons. D) 14 protons. E) 14 electrons.