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1. Which is FALSE about enzyme catalysis?A. Enzymes are highly specific for their substratesB. Enzyme-catalyzed reactions are 10^3 to 10^20 times faster than the coreesponding un-catalyzed reactionsC. Most enzymes are proteins or proteins with cofactorsD. Enzymes can lower activation energyE. Enzymes raise the equilibrium constant of a reaction
2. Specifically, what is meant by the steady-state assumption in the derivation of the Michaelis-Menton equation?A. The concentration of ES is constant.B. The formation of the product is the rate limiting step.C. The reaction has achieved maximum velocity.D. The rate of the P + E => ES is negligible.E. The temperature is constant.
3. If two enzymes catalyze the same reaction, what does a comparison of Km values tell you?A. The enzyme with a lower Km has a lower VmaxB. The enzyme with a higher Km has a lower VmaxC. The enzyme with a lower Km has a greater affinity for the substrate.D. The enzyme with a higher Km has a greater affinity for the substrate
4. Which statement is true about catalysts?A. They are generally complementary to the substrate.B. They lower the free energy of the intermediates.C. They stabilize transition states.D. They reduce ?G^o'E. All of the above
5. Which is classified as a chemical mode of catalysis?A. Induced fitB. Proximity effectC. Acid-base catalysisD. Transition state stabilizationE. Catalytic antibodies
Complete each of statements given below to identify whether the solution inside each bag washypertonic, hypotonic or isotonic.
Eukaryotic RNA polymerases lack sigma factors. What proteins bind TATA promoters in eukaryotes.
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how data were collected during a study of the catalytic.
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Though plants, fungi, and prokaryotes all have cell walls, we classify them under different taxonomic units. Which of the observations below comes closest to explaining the basis for placing these organisms in different taxa.
Transcription factor X binds to a response element in gene A and gene B. In muscle cells, transcription factor X activates transcription of gene A. In neuronal cells,
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A new Nurse intern has been working non-stop for 15 hrs in the ER. A patient was showing serious signs of dehydration. The Nurse took action without checking with the attending physician and administered 1 liter of sterile distilled water intravenous..
iscuss how do we get concentration gradients in neurons? how can we test if these processes are active or passive?
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