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A glycine residue ecists at position 210 of the tryptophan synthetase enzyme of wild-type E.coli. If the codon specifying glycine is GGA, how many single-base substitutions will result in an amino acid at position 210, and what are they? How many will result if the wild-type codon is GGU?
What do we call a cluster of chlorophyll molecules found inside the thyroid.
A cross is made between 2 E. coli strains: Hfr arg+ bio+ leu+ (x) F- arg- bio- leu-. Interuppted mating studies show that arg+ enteres the recipient last, so arg+ recombinants are selected on a medium containing bio and leu only.
In plant communities today, leaf morphology is correlated with mean annual temperature, so paleobotanists use fossil leaf morphology to estimate the mean annual temperature of paleoclimates.
If you remove the ER retention signal from a protein that normally resides in the ER lumen, where do you predict the protein will ultimately end up? Explain.
Develop a simple research design for the following research question. For the design include the independent variable, the dependent variable, two possible controls, and 2 units of measurement the researcher should use and what the unit should be ..
In the evolution of land plants we see several major trends. Describe how the evolution of seeds decreases a plant's dependency upon water.
In a cross of AABbCcdd x AaBbccDd what proportion of offspring will have the genotype of AABBCcdd? Please explain.
Discuss how would a disease or disorder that interferes with acetylcholine receptors at neuromuscular junction affect muscle strength?
How the glucose and phospholipids would be distributed after you let the mixture settle for 30 minutes. How may this happen considering natural cleaning mechanism of the respiratory system.
List two features that allow plants to withstand flooding of the root zone.
You isolate a mutant plant with a defective desaturase enzyme, such that it is no longer capable of homeoviscous adaptation when temperatures drop from 37 degrees centigrade (summer in Kansas) down to 10 degrees (fall temperatures).
Microtubules can be formed in vitro from tubulin that is bound to GTP analogues that (unlike GTP) cannot be hydrolyzed. What properties would you expect these microtubules to possess?
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