Biochemistry

Step 1: Given data.
- Protein content = 20% of the cell weight. - Density of cell = 1.2 g/mL. - Volume of cell = $4%20%5Ctimes%2010%5E%7B-9%7D$ mL.

Step 2: Calculate the mass of the cell.
Mass of the cell = Density × Volume = $1.2%20%5C%2C%20%5Ctext%7Bg%2FmL%7D%20%5Ctimes%204%20%5Ctimes%2010%5E%7B-9%7D%20%5C%2C%20%5Ctext%7BmL%7D%20%3D%204.8%20%5Ctimes%2010%5E%7B-9%7D%20%5C%2C%20%5Ctext%7Bg%7D$ .

Step 3: Calculate the mass of protein.
Mass of protein = 20% of the mass of the cell = $0.2%20%5Ctimes%204.8%20%5Ctimes%2010%5E%7B-9%7D%20%5C%2C%20%5Ctext%7Bg%7D%20%3D%209.6%20%5Ctimes%2010%5E%7B-10%7D%20%5C%2C%20%5Ctext%7Bg%7D$ .

Step 4: Convert mass of protein to mg.
Mass of protein in mg = $9.6%20%5Ctimes%2010%5E%7B-10%7D%20%5C%2C%20%5Ctext%7Bg%7D%20%3D%209.6%20%5Ctimes%2010%5E%7B-7%7D%20%5C%2C%20%5Ctext%7Bmg%7D$ .

Step 5: Calculate the concentration of protein.
Concentration = $%5Cfrac%7B%5Ctext%7BMass%20of%20protein%7D%7D%7B%5Ctext%7BVolume%20of%20cell%7D%7D%20%3D%20%5Cfrac%7B9.6%20%5Ctimes%2010%5E%7B-7%7D%20%5C%2C%20%5Ctext%7Bmg%7D%7D%7B4%20%5Ctimes%2010%5E%7B-9%7D%20%5C%2C%20%5Ctext%7BmL%7D%7D%20%3D%20240%20%5C%2C%20%5Ctext%7Bmg%2FmL%7D$ .

Step 6: Conclusion.
The correct answer is (D) 240.

High-Yield Trend

Chapter Questions
2 MCQs

Official Solution

Official Solution

Biochemistry

High-Yield Trend

Chapter Questions 2 MCQs

Official Solution

Official Solution

Chapter Questions
2 MCQs