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Hemoglobin forms a tetramer (4 subunits) and is responsible for binding and transporting both oxygen and carbon dioxide through the bloodstream. It does not possess catalytic activity. However, when the first molecule of oxygen binds, it causes a change in the shape of hemoglobin that makes it easier for the second molecule of oxygen to bind, which then improves the ability of the third molecule of oxygen to bind, and that in turn promotes binding of the fourth and final molecule of oxygen. Each oxygen can be viewed as a substrate in this regard, and causes slight changes in the shape of the hemoglobin tetramer. This illustrates which concept of enzyme fit?
Which compound would carbon and fluorine most likely form?
If two chromosomes of a species are the same length and have a similar centromere placement but are not homologous, what is different about them.explain the concepts of homologous chromosome
Phosphatidyl ethanolamine is a major class of membrane phospholipids.
Preliminary trials suggest that the drug tamoxifen, antiestrogen commonly use to treat breast cancer, is useful in treating biopolar disorder. Tamoxifen is an inhibitor of Protein Kinase C.
Explain why cells need to receive nutrients (explain what nutrients are & give examples)? Explain why cells need to receive & send messages (briefly explain how cells of the body communicate and why it is important for cells to communicate).
Having learned an optimum sugar concentration, students next decide to investigate whether different strands of yeast ferment glucose to produce different amounts of alcohol. In brief explain how this experiment would be set up.
If a patient has small red blood cells andhas increased amount of RBC(slighlty) - just one numberaway from normal, and everything else looks normally is theresomething to be concerned for?
Retinoblastoma is an eye cancer caused by a dominant allele. A normal female and an affected male have four children: one normal and three affected.
q. eastern tent caterpillars live in sizable groups in silk nests or tents which they construct in cherry trees. they
Cells use transporters to move nearly all metabolites across membranes. But how much faster is a transporter than simple diffusion? There is sufficient information available for glucose transporters to make comparison.
Find the pKa. For an acid HA, the concentrations of HA and A^- are 0.075 and 0.025, respectively, at pH 6.0. What is the pKa value for HA?
Monarch butterfly populations are found east and west of Rocky Mountains. How can DNA fingerprinting technology be used to establish that they constitute one breeding population or two separate breeding populations.
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