1. E. coli DNA polymerase V has the ability to bypass thymine dimers. However, Pol V tends to incorporate G rather than A opposite the dam-aged T bases. Would you expect Pol V to be more or less processive than Pol III? Explain.
2. Explain why base excision repair, nucleotide excision repair, and mismatch repair—which all require nucleases to excise damaged DNA—require DNA ligase.
3. Why are there no Pol I mutants that completely lack 5′ → 3′ exo-nuclease activity?
In: Biology
Discuss ethical issues affecting communicable disease and infection control.
In: Biology
In: Biology
This question DOES NOT require a book. (DOES NOT REQUIRE ONE, it is an option)
Make a character table that has mammalia, Reptilia, Amphibia, Lobe-fined fish, Ray Finned fish, Chondrichthyes, jawless fish and lancelets as the organisms (you may choose a specific organism within each grouping as an example.) Be sure there is at least ONE derived character between each group. Make sure you identify your basal taxon.
In: Biology
1. Understand where CO2, H2O, O2, CH2O (sugar), light, NADP+, ADP+Pi, NADPH, and ATP figure into Light Reactions and the Calvin Cycle.
2. What is an absorbance spectra? an action spectra?
3. Be able to describe how a photosystem harvests light energy from
photons.
4. Compare and contrast ETC and chemiosmosis in the chloroplast vs. the mitochondria.
5. What are the inputs to the Calvin Cycle of CO2, RuBP, ATP, and NADPH per G3P molecule? What are rubisco and RuBP?
PLEASE ANSWER ALL :)
In: Biology
Complete the following table.
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Where in Eukaryotic cell does this process occur? |
What is the product of this process? |
What is the template of this process? |
Where does this process occur in a prokaryotic cell? |
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Transcription |
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Translation |
In: Biology
How do poverty, oppression and chronic stress affect diabetes susceptibility? Why do you think so much money and attention goes towards genetic research rather than towards improving social conditions?
In: Biology
An E. Coli strain has the following lac genotype: Lacl+ lacP+ lacOc lacZ- / lacl- lacP+ lacO + lacZ + If lactose is PRESENT, what would the level of Beta-galactose be?
1- High
2- Low
In: Biology
1. The two molecules shown are: A. Epimers B. Identical molecules just drawn differently C. Anomers D. Oligomers C. Enantiomers
2. Sphingomyelins contain more saturated fatty acid tails than glycerophospholipids. A. True B. False 3. What 2 sugars comprise maltose? What kind of bond links the 2 sugars? (open answer) 4. Which of the polysaccharides in the attached figure represents the protective exterior of insects, crabs, etc.?
In: Biology
Inside an angiosperm seed, the embryonic form of the shoot is called the __.
In: Biology
Which of the following are fundamental properties of life: 1) unique macromolecular organization that obeys all of the fundamental laws of chemistry; 2) use of DNA for the storage of genetic information and the eventual production of proteins to allow for organismal development and function; 3) the presence of a hierarchical organization that involves the use of lower levels to build higher levels; 4) spontaneous generation under conditions found in the current biosphere; 5) the interaction with the environment for the acquisition of building blocks and the elimination of wastes; 6) precise cellular movements during development that arise from outside of the system itself.
In: Biology
Regarding biotechnology/biomanufacturing/cGMPs/FDA, How is the approval process for drugs and biologics different?
In: Biology
A man heterozygous at both the locus for PTC tasting and at the locus for albinism marries an albino woman heterozygous at the PTC tasting locus. These two loci assort independently. a) what is the probability of producing 3 tasters with normal pigmentation and 3 non-taster albinos in a family of 6 children? b) what is the probability of producing 3 tasters with normal pigmentation and 3 non- taster albinos in that order in a family of 6 children?
In: Biology
Describe at least two elements from a food label of something you currently eat. that you feel will be of great significance in planning a healthy eating plan for yourself, examine the focus panel comparing the old standard FDA mandated food label for most packaged foods with the then-proposed new one. Compare the old to the new one in reality that you are holding. Identify at least two distinctions between your label and the old label in the picture; tell if those distinctions changed in the same way as predicted in the picture or in a different way, and why this might be important. Lastly, regarding the 'Ingredients', do you think in general that a healthier food will have a longer or shorter list? Why?.
In: Biology
For each of the three amphibian groups Caudata, Anura and Gymnophiona
generally summarize how they reproduce (calling? internal? external? eggs? metamorphosis? direct development etc., any parental care?).
In: Biology