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Question: The nucleotide composition of a virus is 10 percent Adenine, 15 percent Thymine, 45 percent Cytosine, and 30% Guanine. Can you predict that the DNA has the double helical structure? Why or why not?
Purine biosynthesis is allowed to take place in the presence of [N15]aspartate, and the newly synthesized GTP and ATP are isolated. What positions are labeled in the two nucleotides.
The insecticide rotenone inhibits one of the steps of the electron transport system in mitochondria. What is the immediate result.
The "Primordial soup" includes the mixture of elements and gases which are thought to have started life on the Earth. Specify where did the gases and elements come from?
As Jung-Min Kee and Tom W. Muir noted in their recent review article, 2012 marked the fifty anniversary of discovery of histidine phosphorylation in proteins.
How are nuclear DNA and mitochondrial DNA transferred.
The mitochondria in them have a protein called thermogenin, which allows the flow of hydrogen ions through an inner mitochondrial membrane (bypassing the ATP synthase). Based on this and your understanding of cellular respiration, propose a mechanism..
A porcupine eats 3,000 J of plant material. 1,600 J is indigestible and is eliminated as feces. 1,300 J are used in cellular respiration. What is the estimated production efficiency of this animal.
Describe how a slight (but smooth) contraction differs from a vigorous contraction of the same muscle using the understandings of multiple motor unit summation.
Assume the charge at the center is now increased to +9Q, while the charge at the surface of the conductor is changed to -13Q.
How do codons relate to primary structure of proteins? Be able to construct a strand of messenger RNA from the sense strand of DNA (TRANSCRIPTION) and understand where this happens in a cell. How does the RNA differ from the DNA? How do mutations in ..
Please describe how one might search for chemical structure, biologic function relationships, involving small molecular weight lipophylic compounds. Provide one example.
Clarify the difference in their efforts to collect oxygen. Polychaetes have lateral, fleshy parapodia beset with numerous setae, and well developed head appendages such as jaws, tentacles and eyes. What function(s) do you think about parapodia serve.
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