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1. Ribozymes in the large ribosomal subunitcatalyze peptidyl transferase activity during elongation. What isthe immediate result?A. The elongation factor EF-Tu isrecycled.B. The tRNA in the p site fallsoff the ribosome.C. A new charged tRNA moves intothe A site.D. The bond broken between thetRNA at the P site and its amino acid, and a peptide bond is formedbetween this amino acid and the one attached to the tRNA in the Asite.E. The ribosome shifts byone codon toward the 3’ end of the mRNA.2. A peptide bond forms between the _____ ofone amino acid and the __________ of another.A. Amino group, carboxyl groupB. Amino group, R groupC. C. R group, R groupD. Carboxyl group, sulfidegroupE. Amino group, phosphophategroup.
3. An alpha helix and a beta-pleated sheet aretypes ofA. protein secondary structureB. tRNA secondary structure.C. Protein primary structureD. Protein primary structure.E. protein quaternary structure.4. In eukaryotes, the AUG initiation codon is located in the___________sequence.A. Shine-DalgarnoB. KozakC. KhoranaD. Goldberg—HognessE. Pribnow
5. Which enzyme charges at tRNAmolecule with the appropriate amino acid?A. RNA polymeraseB. DNA polymeraseC. tRNA ligaseD. Peptidelyl transferaseE. Aminoacyl-tRNAsynthetase
q. most biologists believe that the immune systems defence against infections largely rests on its capability to
Name the non-memory B & T cells produced by the body. Discuss the interactions and origins of the different types of T cells and B cells and the role of "recognition." Describe the interplay of these cells in a specific immune response.
A person in the car accident shows the following symptoms: extreme paresis on right side, involving the arm and leg; reduction of the pain sensation on left side.
Aspirin and painkillers like ibuprofen are viewed as "harmless" by some. What are the negatives of taking too many of these types of painkillers and not following the directions on the bottle?
The patient lives near the San Luis Rey River and has no history of foreign travel, blood transfusion, or intravenous drug use. What is the disease? How was it obtained.
Carbonic anhydrase has a molecular weight of 30,000g/mol and a turnover of about 1 million per second. If you are given a solution saturated with CO2 containing 2 micrograms (ug) of carbonic anhydrase.
A groom's sister has CF, an autosomal recessive disease, though he himself does not have nor do either of his parents. He is marrying a woman with no family history of CF.
What is the molarity of the drug in he Petri plates?
Would this estimate be accurate if offspring and parents received a different diet? Explain.
Which extinct species should be the best candidate to serve as the out-group for clade whose common ancestor occurs at position 2.
Whatever its ultimate cause(s), the cambrian explosion is a prime example of
After a long scuba diving session on a Caribbean reef, David boards a plane to Denver. He begins to feel pain in his elbows on a flight back home to Denver.
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