Which of the following is NOT a floral structure?
A. endosperm
B. calyx
C. corolla
D. stigma
E. style
A. endosperm
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The rusts and smuts that seriously affect crop plants are
A. ascomycetes. B. zygomycetes. C. chytrids. D. basidiomycetes. E. actinomycetes.
The nucleosome core particle consists of ____
a. two chromosomes linked together b. RNA wrapped around an 8-protein histone complex c. DNA wrapped around an 8-protein histone complex d. DNA associated with the nuclear envelope e. DNA replication enzymes associating to form the replisome
How would you characterize the amount of molecular traffic entering and leaving the nucleus?
a. There is a high amount of traffic entering and leaving the nucleus. b. There is a moderate amount of traffic entering and leaving the nucleus. c. There is a low amount of traffic entering and leaving the nucleus. d. Traffic is entering and leaving the nucleus exclusively at the time of cell division.
Answer the following questions true (T) or false (F)
1. Both viruses and prokaryotes reproduce by binary fission. 2. The shape of a virus may be determined by either its capsid or its envelope. 3. The number of species that a specific virus infects is called its host range while the types of tissues that the virus infects is called tropism.