A biochemist isolates, purifies, and combines in a test tube a variety of molecules needed for DNA replication. When she adds some DNA to the mixture, replication occurs, but each DNA molecule consists of a normal strand paired with numerous segments of DNA a few hundred nucleotides long. What has she probably left out of the mixture?

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#Question id: 14538

#Section 1: Engineering Mathematics

The following plot shows a function y which varies linearly with x. The value of the integral 

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#Question id: 1279

#Section 3: Genetics, Cellular and Molecular Biology

A tight junction is made up of which of the following proteins?

a. tricellulin                                                     b. occludin

c. claudin                                                         d. connexins

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#Question id: 14262

#Section 5: Bioprocess Engineering and Process Biotechnology

The BOD5 value of a waste-water feed stream to an activated-sludge unit is S0 = 300 mg/l, and the effluent is desired to be S = 30 mg/l. The feed flow rate is F = 2× 10^7 l/day. For the recycle ratio of α = 0.5 and a steady-state biomass concentration of X = 5 g/l, Use the following kinetic parameters:

 

calculate Required reactor volume (V). 

_______________10^6

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#Question id: 10264

#Section 3: Genetics, Cellular and Molecular Biology

Chiasmata formation occurs during

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#Question id: 13037

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Which of the following proteins will be most far away from the positively charged electrode during isoelectric focusing in a buffer with pH of 5?