Which of the following statements about Korarchaeota is true?
a. includes halophiles
b. includes thermophiles
c. oldest known lineage in the Archaea
d. includes halophiles and thermophiles
e. most recently discovered lineage in the Archaea
C
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Scientists attempted for many years to conduct nuclear transplants but failed. However, geneticists had success in cloning a sheep. They were successful because they
A. picked a cell very early in development. B. replicated the blastomeres before insertion. C. delayed transcription in the blastomeres. D. treated the nucleus with sheep plasma before nuclear insertion. E. utilized a new micro pipette technique.
The number of bird species on islands near Papua New Guinea __________ as one gets farther from Papua New Guinea.
A. increases B. decreases C. is unknown D. shows an inconsistent pattern E. None of the choices are correct.
B cells and T cells that react with self-antigens are destroyed by____
a. apoptosis b. phagocytosis c. cytokinesis d. diakinesis e. endocytosis
Select the following phylum that includes coelomate, bilaterian animals that have a structure called a notochord.
A. Annelida B. Arthropoda C. Mollusca D. Echinodermata E. Chordata