Which is the most recently evolved embryonic tissue in animals?
a. mesoderm
b. ectoderm
c. endoderm
d. periderm
e. epiderm
ANSWER: a
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The peripheral nervous system is divided into what two branches?
a. somatic and sympathetic nervous systems b. parasympathetic and autonomic nervous systems c. somatic and autonomic nervous systems d. parasympathetic and sympathetic nervous systems
A receptor potential is a(n) all-or-none response
__________________ Indicate whether the statement is true or false.
If a haploid cell goes through meiosis it will generate
a)four haploid cells. b)This is not possible. c)two haploid cells. d)four diploid cells. e)two diploid cells.
An adult patient has just received a diagnosis of brain cancer and is undergoing treatment. Based on what you know about cell division and cancer, why does this seem unusual?
What will be an ideal response?