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Background: The developing fetus has a different kind of hemoglobin than most normal adults. Fetal hemoglobin (hemoglobin F) consists of two ? chains and two ? chains, whereas adult hemoglobin (hemoglobin A) consists of two ? chains and two ? chains. Fetal hemoglobin is synthesized beginning at the third month of gestation and continues up through birth. After birth, hemoglobin F synthesis declines and synthesis of hemoglobin A increases (synthesis of the ? chain declines, and synthesis of the ? chain increases). By the time the baby is six months old, 98% of its hemoglobin is hemoglobin A.
Question: The chain differs slightly in structure from the chain and has fewer Lys and His residues than the chain. This means that hemoglobin F has fewer positive charges in its central cavity than does hemoglobin A. Given this information, explain why hemoglobin F has a higher affinity for oxygen than does hemoglobin A.
A membrane which is permeable to an uncharged molecule X separates 2-solutions. Solution A contains a 100 mM solution of X and B 10 mM.
Assume you ingest 20 cells of Salmonella typhimurium in a chicken taco. Some of the bacteria are killed as they pass through the stomach but ten viable cells survive and reach the intestine.
Determine the difference between zygotic, gametic, and sporic life cycles? Include the haploid and diploid generation lengths and cellularity.
which changes made the most severe effect on the protein
What organism is most probable the cause of the symptoms. What is cause the man's disease? How is this disease transmitted? How may it be prevented.
Suppose that each excitatory presynaptic neuron causes a 0.5mv depolarization of postsynaptic neuron, and each inhibitory presynaptic neuron causes a 0.5mv hyperpolarization of postsynaptic neuron.
Defend the stem cell v/s gene therapy with regard to the current treatment projections for the ALS.Recognize the Mimoun Azzouz and explain his work in gene therapy.
Determine what impact would an inhibition of carbonic anhydrase have on, Osteoclasts, parietal calls, erythrocytes, epithelial cells of proximal tubules?
A marine biologist has dredged up an unknown animal from the seafloor. Describe some of the characteristics she must look at to determine the phylum to which the animal have to be assigned.
If a trait had a broad-sense heritability of 1, what would it mean? 0.5? 0? What type of traits has a broad-sense heritability of 1? What type of traits has a heritability of zero?
Did any of substances travel against their concentration gradient? Describe why or why not. Using your results from Chart 2, what was the fastest rate of facilitated diffusion recorded? _______________.
Meiotic nondisjunction events will create aneuploid gametes.define normal Drosophila male meiotic segregation.
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