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The enzyme carbonic anhydrase is found in erythrocytes, and has a molecular mass of approximately 30000 Da. The hydration reaction catalyzed by this enzyme is reversible, and plays a role in the transport of CO2 from the tissues to the lungs.
H2O + CO2 <-> H2CO3
If 20 micrograms of pure enzyme catalyzes the hydration of 0.50 g of Co2 in 1 minute, at 37 degrees Celsius, under optimal conditions, what is the turnover number (kcat) for carbonic anhydrase?
Propose a hypothesis to explain the current decline in Songbird numbers. Design an experiment that could test your hypothesis.
If some cell-surface receptors, including cytokine receptors and notch, can rapidly signal to the nucleus by activating latent transcription regulators at the plasma membrane, why do most cell-surface receptors use long, indirect signalling cascades ..
Upon completion of genome sequencing projects, how do scientists usually go about asking how many genes there are in genome and where they are located.
Consider you could micro-inject the cytochrome c within the cytosol of the wild-type cells and of cells which were doubly defective for Bax and Bak.
Give a mechanistic explanation for finding which is consistent with all the data. Explain your reasoning
A can of Mountain Dew soda contains 46 g of sugar. Assume that your body completely digests this sugar, 170 kcal of heat energy is available from the sugar. Around how many grams of water will you have to evaporate as sweat to lose this 170 kcal of e..
Both RT and PR represent potential targets for antiretroviral drugs. Drugs called nucleoside analogs (NA) act against RT, whereas drugs known as protease inhibitors (PI) act against PR.
As Ben jumped on his bike and headed for the fresh water lake, his mom called after him, "Don't swim if we have an electrical storm-it looks threatening". That was a valid request. Why with reason.
Another temperate biome planned for the biome garden is the temperate grassland/desert biome. Your friend is particularly interested in developing temperate grassland. Discuss some of the considerations involved in establishing such grassland under g..
What component of root-tip cells is stained by Safranin in the permanent mount of a longitudinal section of a corn root tip? What component of root-tip cells does Fast Green stain? What could different stains such as these indicate with respect to ce..
Without oxygen, cellular respiration grinds to a standstill, although glycolysis can continue to make some ATP anaerobically for a short time. While oxygen runs out, why does electron transport stop? Why do you thing the Krebs cycle stops.
During the method of inspiration, the ______ contracts, pulling downward. Also, the ______ muscles contract and lift the rib cage. Together, these muscle contractions result in the ______ in the pressure in the ______ cavity.
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