Digestion in a sponge takes place in:
A. the osculum.
B. individual cells.
C. the spongocoel.
D. the spicule.
E. the mesophyll.
B
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Some ________ influence histone modification reactions.
A) microRNAs B) histones C) p53 genes D) scaffolding proteins E) tumor suppressors
Blue crabs have specialized appendages called ________ that are utilized for additional locomotion
a. pleopods b. telson c. swimmerets d. chelipods
Which group includes the simplest of organisms that do not have a nucleus?
A. Archaea B. Protista C. Bacteria D. Archaea and Bacteria E. Fungi
If Raf is mutated so that it is "on" constitutively, what is the effect on the cell?
a) the cells lose growth control b the cells dedifferentiate c) the cells increase in volume permanently d) the cells differentiate e) the cells stop dividing