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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. Pribnow5. Which enzyme charges at tRNAmolecule with the appropriate amino acid?A. RNA polymeraseB. DNA polymeraseC. tRNA ligaseD. Peptidelyl transferaseE. Aminoacyl-tRNAsynthetase
What advantages do organelles provide to eukaryotic cells (3 pts)? Are they necessarily required or simply an artefact of the evolutionary history of eukaryotes (2 pts)?
What system is not present in earthworms, but present in humans? How do you suppose the process is accomplished?
Biotechnology allows us to employ living organisms or their processes for human needs or purposes. Research how biotechnology is used today. Discuss one use of biotechnology, answering the following questions:
In which phase can "cryptic growth" sometimes occur?
What organelle does DAPI stain? Describe the staining pattern when the cells were stained with DAPI. Also, determine where the organelle stained by DAPI should be localized. Did your results conform to this information? Why or why not?
Why is FHS so low during the luteum phase of the ovarian cycle, What causes the onset of a new cycle and the end of the previous one?
Please explain why the Miller & Urey experiment was so important? What did that experiment tell us, How did it relate to the origin of life
Create Lotka-Volterr model equation that describes population of prey and predators and define each term in your equation.
Assume if you have a population, with a frequency of the p allele (A)equal to 0.25, and you apply the selection outlined below, what will be the frequency of the q allele after selection?
Which of the substrates is in the oxidized form?
Widespread resistance of malarial parasite to drugs like chloroquine has prompted attempts to develop a malarial vaccine to combat malaria. Explain why is it difficult to develop an effective malaria vaccine?
How many different genotypes are possible among the progeny from a sexual cross between an organism that is Aa Bb and another that is also Aa Bb? Assuming complete dominance exists at both loci, how many different phenotypes are possible from this..
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