Nuclear localization signals were first identified by Alan Smith and his colleagues in the protein
a. nucleoplasmin.
b. histone H1.
c. lamin B.
d. SV40 T antigen.
Ans: d. SV40 T antigen.
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Viroids
A. are naked (lacking a protein shell) pieces of RNA. B. are naked (lacking a protein shell) pieces of DNA. C. are known to cause neurodegenerative diseases in animals. D. are composed of protein encasing DNA. E. are known to cause neurodegenerative diseases in animals AND are composed of protein encasing DNA.
Eukaryotic chromosomes have evolved ________ at the ends of linear chromosomes to ensure the replication of the two ends of the chromosomes.
A) methylases B) capping proteins C) ligases D) telomeres E) single-stranded binding proteins
Ocean productivity is not: a. the amount of food marine organisms can produce
b. a leading field of research. c. the amount of organisms actually harvested each year by people. d. the number of organisms the ocean can support.
Which of the following is NOT part of the peripheral nervous system:
a. the somatic nervous system b. the autonomic nervous system c. nerves branching out from the spinal cord d. the brain