Imagine that you and your colleagues are working in a lab to develop a protein synthesis system for a new type of synthetic cell. During your brainstorming sessions, you propose that polycistronic mRNA (an mRNA with multiple start and stop codons)
would be much more useful than mRNA that is only translated into one protein (with just one start and stop codon). This would allow for multiple proteins necessary for a particular function to be translated together. One of your colleagues says that is a good idea, but if you decide to go with polycistronic mRNA, you'd better make sure to use a prokaryotic translation system. Why might it be problematic to use a eukaryotic translation system with polycistronic mRNA?
A. Introns would always prevent translation of the mRNA.
B. Eukaryotic ribosomes initiate translation by binding to the 5-cap, which is only at one end of the mRNA.
C. Prokaryotic ribosomes do not detach from mRNA when they reach a stop codon.
D. Eukaryotic start and stop codons are different from prokaryotic start and stop codons.
Answer: B
You might also like to view...
Why would environmentalists nurture baby California condors by the use of puppets?
a. If they were directly touched by humans, other condors might detect a human odor. b. They need to learn certain behaviors before they are free in the environment. c. There are not many adult condors available to nurture them. d. all of these
The genes that determine where appendages will develop on the animal’s body are called
a. ideotic genes b. homeobox c. Hox genes d. homeotic genes e. homeodomains
A niche is
A. a place where an organism lives. B. the way an organism goes about living. C. a place where you put yourself. D. an animal that is able to slip through a narrow opening.
In healthy adults, a loss of more than ____% of total body fluid is required to alter homeostasis and cause illness.
A) 10 B) 15 C) 20 D) 30