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Calculate the net ATP yield (ATP equivalents) for the combined complete oxidation of 1 molecule of serine and 1 molecule of alanine to CO2 in the liver, taking into consideration the energy cost of nitrogen excretion as urea. Show your reasoning. (Assume GTP = ATP) Work out a pathway that uses the nitrogen in each amino acid for the nitrogens in the excreted urea without the input of additional nitrogen.
Conditional lethal mutations are very useful in genetic and biochemical analyses of complex processes such as DNA replication. Temperature sensitive mutations, which are one form of conditional lethal mutation.
RNAse is an enzyme that cleaves the P--O^5' bond in RNA. it has two His residues in the active site. Suggest a plausible explanation why the enzyme activity changes when pH is increased or decreased from ~pH 6.0.
Define membrane potential (Vm) and sodium equilibrium potential (ENa). Which of these, if any, changes during the course of an action potential?
Explain plant life, animal life, and geology of the ecosystem in Utah. What populations and communities are present? How dependant is your community on this ecosystem? What are the preventive factors of the ecosystem.
Lane one (normal control) has a band at 4400 bp and lane two (cells from cheek) has bands at 4400 bp, 3300 bp, and 1400 bp.
A forty-four year old man is recovering from third degree burns over 50 percent of his body surface area. His serum potassium level is low (2.9 mEq/L). Heexhibits postural hypotension and skeletal muscle weakness.
Explain the process of viral replication; discuss both normal and retroviruses, and comment on the implications of this process for genetic engineering.
Describe what happens to the riboswitch (in cis) in the presence of SAM and in the absence of SAM.
Determine which of the following best explains why cardiac muscle is incapable of tetanus, a sustained contraction characteristic of skeletal muscle?
Why do we preserve a particular species? Because of its value to the conservation of overall biodiversity, or because of an intrinsic right to exist?
To which blood types could the following people donate?
Determine what additional data do you think is necessary for healthcare professionals and students to know? Do some additional research on the subject of laboratory safety and share your findings with your classmates and determine universal precautio..
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