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Cellular Respiration NOTES
Cellular Respiration NOTES

... human), all organisms use glycolysis as an initial step. Remember, glycolysis results in a net gain of 2 ATP (useful) and 2 NADH (without oxygen, not very useful) and the pyruvate molecules. So, in order to recycle the NAD+ (so more glycolysis can still occur) and to take care of the pyruvate, organ ...
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Membrane Transport
Membrane Transport

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...  Na+,K+-ATPase, in plasma membranes of most animal cells is an antiport pump. It catalyzes ATP-dependent transport of Na+ out of a cell in exchange for K+ entering.  (H+, K+)-ATPase, involved in acid secretion in the stomach is an antiport pump. It catalyzes transport of H+ out of the gastric pari ...
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... Skipped these in 2011-2012 Questions – 1. Nitrogen gas is also present in the atmosphere and it reacted with the Mg to magnesium nitride. Write a balanced chemical equation for this reaction. 2. When you added water to the crucible. The water reacts with the magnesium nitride (as heat is applied) t ...
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... Convert the mass of the Mg into moles. Convert the mass of the oxygen into moles. Are there more moles of Mg or oxygen? By how many times? Round to the nearest whole number. 7. What is the chemical formula for magnesium oxide? Explain how you know. ...
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Rudbeckia hirta Toto® Gold

... hours to initiate flowering. Plants that do not receive sufficient day length will form rosettes and flowering will be delayed. Day length extension of greater than 16 hours can cause stem elongation. Light manipulation can be used to control plant growth. Media: Use a well-drained, growing substrat ...
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Midterm Exam Advanced Biochemistry II (Answer) 1. At equilibrium

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Magnesium in biology



Magnesium is an essential element in biological systems. Magnesium occurs typically as the Mg2+ ion. It is an essential mineral nutrient (i.e., element) for life and is present in every cell type in every organism. For example, ATP (adenosine triphosphate), the main source of energy in cells, must be bound to a magnesium ion in order to be biologically active. What is called ATP is often actually Mg-ATP. As such, magnesium plays a role in the stability of all polyphosphate compounds in the cells, including those associated with the synthesis of DNA and RNA.Over 300 enzymes require the presence of magnesium ions for their catalytic action, including all enzymes utilizing or synthesizing ATP, or those that use other nucleotides to synthesize DNA and RNA.In plants, magnesium is necessary for synthesis of chlorophyll and photosynthesis.
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