Prions are composed of a single protein called (plaque/BSE/PrP)
What will be an ideal response?
PrP
Bloom's Taxonomy: Knowledge
Section: Other Parasitic Particles: Viroids and Prions
Learning Outcome: 13.24
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Why does the author seem skeptical about the idea of in-vitro fertilization leading to the evolution of a “genius species?”
a. Scientists can’t test embryos to see if certain genes are expressed. b. Scientist can’t select which embryos to implant c. There are too many genes thought to influence IQ, and they don’t know enough about the genetic basis of intelligence to select for it. d. All of the above
The conducting cells in phloem are
A. sieve tube elements. B. vessel elements. C. stomata. D. tracheids. E. companion cells.
The male gametes are
A. testes. B. zygotes. C. semen. D. sperm.
The tRNA shown in the figure has its 3' end projecting beyond its 5' end. What will occur at this 3' end?
A. The excess nucleotides (ACCA) will be cleaved off at the ribosome. B. The small and large subunits of the ribosome will attach to it. C. The 5' cap of the mRNA will become covalently bound. D. The amino acid binds covalently. E. The codon and anticodon complement one another.