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Cell BioChem

Plotting RSA vs. Protein Percentage

Subcellular fractionation of rat liver resulted in the following samples: Fraction.......Speed (xg)......Volume (ml)......protein (mg/ml) P-1............2800..................10........................6 P-2............12000..................10......................4 P-3............27000..................8......

Metabolism in Biochemistry and reactions

2) The cell can transfer the high energy electrons from NADH into the mitochondria using either the glycerol phosphate shuttle or the malate-aspartate shuttle. Explain one of these two shuttles with a diagram and make sure to include details of total ATP yield. Show the structures or names of the molecules involved and also th

Calculate length of DNA in corn

A diploid (somatic) cell of corn has DNA of molecular weight 9 à? 10 12 [ten power twelve]. Determine a) the number of deoxyribonucleotide pairs, b) its length in micrometers and c) its length in inches.

Determining length of DNA using known number of deoxyribonucleotide pairs

Give a) mathematical expression to calculate the number of possible sequences of nucleotide pairs with the usual base pairing, for a molecule of n-deoxyribonucleotide pairs. b) How would you determine the length of a DNA molecule in micrometers, with a known number of deoxyribonucleotide pairs?

Calculating pH, Ka, grams, and amounts of an acid for making a buffer

1. Calculate the pH of a solution which is 0.428 M in oxalic acid and 1.44 M in oxalate. 2. What is the pH of a solution that is 45.5 mM in acetic acid and 1.11 M in acetate? 3. A solution which is 3.19X10 to the -3 M in an acid (HA) and 6.78x10 to the -3 M in its conjugate base (A-) is found to have a pH of 8.65. What i

Determining the pKa of an acid.

For a weak electrolyte that ionizes as: HX --> H+ + X- construct a buffer with a ratio of 5 moles of HX/2.1 moles X-. The reaction is maintained at pH = 8.7. What is the pKa of the acid?