When uncharged tRNA concentration is low what will you expect as the activity of tryptophan operon?

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#Question id: 2944

#SCPH01 Biochemistry

DNA replication at each origin occurs only once during the cell cycle because of:

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#Question id: 6989

#SCPH01 Biochemistry

Adult human bone:

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#Question id: 11903

#SCPH28 | Zoology

If a patient has a creatinine clearance of 90 ml/min, a urine flow rate of 1 ml/min, a plasma K+ concentration of 4 mEq/L, and a urine K+ concentration of 60 mEq/L, what is the approximate rate of K+ excretion?

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#Question id: 4966

#SCPH28 | Zoology

If it were possible to conduct sophisticated microscopic and chemical analyses of microfossils found in 3.2-billion-year-old stromatolites, then within such microfossils, one should be surprised to observe evidence of:

I. double-stranded DNA

II. a nuclear envelope

III. a nucleoid

IV. a nucleolus

V. nucleic acids

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#Question id: 363

#SCPH01 Biochemistry

What is the pH of a mixture of 0.042 M NaH2PO4 and 0.058 M Na2HPO4? If 1.0 mL of 10.0 M NaOH is added to a liter of the buffer prepared, how much will the pH change? (pKa = 6.86)