A collection of similarly specialized cells and any extracellular material they secrete and maintain describes
a. an organ.
b. a system.
c. a tissue.
d. organelles.
d
Biology & Microbiology
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The region at which the RNA polymerase binds is the ________ region.
A. trailer B. promoter C. coding D. leader
Biology & Microbiology
Sharks are positively buoyant in seawater
Indicate whether the statement is true or false
Biology & Microbiology
Precancerous growths in the colon are known as ________; these can usually be removed surgically
Fill in the blank(s) with correct word
Biology & Microbiology
Valium, a prescription drug used to treat anxiety, works by
A) binding and activating acetylcholine receptors. B) preventing serotonin reuptake into neurons. C) increasing the release and availability of norepinephrine and dopamine at synapses. D) activating receptors for GABA.
Biology & Microbiology