Within a genome, an enhancer may be located
A) upstream of the gene enhanced.
B) downstream of the gene enhanced.
C) within the gene enhanced.
D) choices A, B, and C
E) both choices A and B
E) both choices A and B
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Which of the following describes primary succession?
a. succession on land that previously had no life
b. succession that moves a community away from equilibrium
c. succession in response to a natural disturbance
d. succession characterized by equilibrium
List and compare the three types of amebiasis
What will be an ideal response?
Parasitic worms, even meters-long tapeworms, are studied in microbiology because
A. they are parasites. B. diagnosis usually involves microscopic examination of patient samples. C. the Gram stain can be used to identify them. D. Leeuwenhoek first discovered them. E. no one else wants to study them.
Operons ___________________________
(a) are commonly found in eukaryotic cells. (b) are transcribed by RNA polymerase II. (c) contain a cluster of genes transcribed as a single mRNA. (d) can only be regulated by gene activator proteins.