If an uncoupling protein is active, how will this affect the P/O ratioof a cell? Explain.
If an uncoupling protein is active, how will this affect the P/O ratioof a cell? Explain.
Increasing proton leakage through an uncoupling protein would tend to _______ the rate of superoxide production. -decrease -increase -not affect which one?
Explain how phosphorylation and dephosphorylation affect cell function.
Diagram and describe how uncoupling proteins work, including their effects on cellular respiration. Explain how these proteins might play a role in thermogenesis and the control of reactive oxygen species such as superoxide. (Hint: you’ll need to explain the ETC and proton gradient for this.)
1. How can protein folding affect protein function? 2. How can amino acid sequence affect protein function? 3. How can an amino acid sequence (primary sequence) dictate 3D protein structure?
What is the difference between passive and active transport? Provide an example of a transport protein involved in the passive transport of K+, and one protein involved in the active transport of K+ across the plasma membrane and explain the direction of the flow of K+ in each case (from inside the cell to the outside, or from the outside of the cell to the inside). Also explain for each of your examples if the transport is uniport, symport, or...
Data List 1. Neural Growth Factor (NGF) is a secreted protein 2. P-STAT has a DNA binding site 3. Erk lives in the cytosol 4. P-Erk lives in the nucleus 5. Ras (which is a completely different protein than Ras-GEF) is a GTPase switch so on with GTP and off with GDP 6. Ras-GDP is located at the plasma membrane 7. TrkA has an amino acid that can have a phosphate group added to it (a phosphorylation site) 8. TrkA...
A cell contains a mutant SRP protein that cannot bind the normal signal sequence on target proteins. Explain how this would affect the endoplasmic reticulum structure AND function. How would cytoplasmic protein production be affected? Explain your reasoning.
2. How do allosteric regulators affect their target enzymes? o By binding to the enzyme's active site and causing a conformational change in the enzyme By binding to a site other than the active site and causing a conformational change in the enzyme C) By inducing amino acid side chain substitutions at a site other than the attive site, causing a conformational change in the en By binding to the enzyme's active site and blocking the binding of substrate molecules...
3. During translation, explain how the cell determines where to start and stop the protein synthesis when an mRNA template is given
The lac repressor active site The active site of the lac repressor protein is composed of OK Multiple Choice Inces O the protein domain that binds to allolactose. the protein domain that binds to DNA the protein domain that binds to other lac repressors O a glucose binding domain < Prev