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1. Why does DNA replicate from 5' to 3' end, instead of from 3' to 5' end?
2. Why do we need DNA polymerase I and not just DNA polymerase III, if polymerase I is just initiating DNA replication and polymerase III does all the "heavy lifting" and continues it, why don't we just use polymerase III? Wouldn't that be more efficient? Why is it more efficient to have two different DNA polymerases?
3. Why is the primer that we use for the beginning of DNA replication made of RNA nucleotides and not DNA nucleotides (deoxynucleotides)?
Other possible sources of the infection included the woman's prior sexual contacts and occupational exposure, given that she was a nurse.
Which of these is not a property of phasic receptors? a) They are fast-adapting. b) They are good for sensing vibration. c) They are sensitive to stimulus changes. d) They are always active.
An uncatalyzed reaction has a rate of 4.2 x 10-7 sec-1. When an enzyme is added the rate is 3.2 x 104 sec-1. Calculate the rate enhancement caused by the enzyme.
Describe the creation and flow of Cerebrospinal Fluid in the Central Nervous System
Body Eyes Tan normal 241 Tan sepia 259 Ebony normal 240 Ebony sepia 260 b) Are the loci linked? If so, how many map units are they apart ? Do a ?2 test and show your work below. Diagram this cross. please show crosses.
Draw a phylogenetic tree of photosynthetic organisms. Include the following in your tree: angiosperms, photosynthetic bacteria, non-photosynthetic bacteria, animals, photosynthetic protists, non-photosynthetic protists, gymnosperms, monocots, bryo..
Compare and contrast the processes of replication and transcription. Be sure to include in the discussion a comparison of the purpose of the processes, the templates used in each process, when each process occurs, and the initiation and terminatio..
a mating of an albino (White) guinea pig and a black one gave 6 borwn, 3 black and 3 white offspring in the f2 generation. what were the genotypes of the albino (Cw) and the black (Cb) parent guinea pig respectively
You have completed amultistep protein purification protocol and found that your totalactivity has decreased. Is your purification a failure?
Membrane bound proteins are generally associated with the nonpolar groups of lipid molecules. Explain how detergents affect the structural integrity of membrane bound proteins in comparison to their effects on normal globular proteins.
What types of residues might be common in the alpha-helix ofa trans-membrane domain? Is proline likely to be found in an alpha-helix? why or whynot?
Assume that decomposers were removed from the forest ecosystem; predict what would happen to the rate of nitrogen cycling. Explain the logic behind your prediction.
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