Rubbery cartilage, calcium-hardened bone tissue, lipid-storing adipose tissue, and blood are looked
upon as specialized __________ tissues. Fill in the blank(s) with the appropriate word(s).
connective
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The maintenance of a constant environment in a cell is called __________.
A. active transport B. homeostasis C. gene expression D. translation
The concept that most morphological changes in species occur gradually over long periods of time is known as the
____.
a. phyletic gradualism hypothesis b. principle of convergent evolution c. punctuated equilibrium hypothesis d. unified theory of evolution e. concept of adaptive radiation
When a motor neuron transmits a message, it releases the neurotransmitter serotonin
____________________ Indicate whether the statement is true or false.
When species are kept separate by preventing the formation of hybrid zygotes, the mechanism that keeps the species separate is known as a ________ isolating mechanism.
A. differential B. postzygotic C. adaptive D. prezygotic E. hybridization