Which animal lacks symmetry, has no embryonic tissues, and has intracellular digestion?
a. a cnidarian
b. a flatworm
c. a sponge
d. an annelid
e. a planaria
ANSWER: c
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A cluster of birth defects, including abnormal facial characteristics, slow physical growth, and retarded mental development is associated most closely with which of the following?
a) toxoplasmosis b) fetal alcohol effects c) polychlorinated biphenyls (PCBs) d) fetal alcohol syndrome
What activates CREB?
A. Binding of cAMP B. Phosphorylation C. Dimerization D. Lowering of cAMP concentration E. Binding to GRE
The three parts of interphase, in order, are ____________________, ____________________, and ____________________
Fill in the blank(s) with correct word
The tricuspid valve is located between the right atrium and the right ventricle. Indicate whether the statement is true or false