TLS Online TPP Program

#Question id: 3864


RNA polymerase:

#Section 3: Genetics, Cellular and Molecular Biology
  1. binds tightly to a region of DNA thousands of base pairs away from the DNA to be transcribed.

  2. can synthesize RNA chains de novo (without a primer).

  3. has a subunit called lambda, which acts as a proofreading ribonuclease.

  4. separates DNA strands throughout a long region of DNA (up to thousands of base pairs), then copies one of them.

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TLS Online TPP Program

#Question id: 14167

#Section 4: Fundamentals of Biological Engineering

Corn-steep liquor contains 2.5 % invert sugars and 50% water; the rest can be considered solids. Beet molasses containing 50% sucrose, 1% invert sugars, 18% water and the remainder solids, is mixed with corn-steep liquor in a mixing tank. Water is added to produce a diluted sugar mixture containing 2% (w/w) invert sugars. 125 kg corn-steep liquor and 45 kg molasses are fed into the tank.

 How much water is required?


TLS Online TPP Program

#Question id: 14167

#Section 5: Bioprocess Engineering and Process Biotechnology

Corn-steep liquor contains 2.5 % invert sugars and 50% water; the rest can be considered solids. Beet molasses containing 50% sucrose, 1% invert sugars, 18% water and the remainder solids, is mixed with corn-steep liquor in a mixing tank. Water is added to produce a diluted sugar mixture containing 2% (w/w) invert sugars. 125 kg corn-steep liquor and 45 kg molasses are fed into the tank.

 How much water is required?


TLS Online TPP Program

#Question id: 14168

#Section 4: Fundamentals of Biological Engineering

Corn-steep liquor contains 2.5 % invert sugars and 50% water; the rest can be considered solids. Beet molasses containing 50% sucrose, 1% invert sugars, 18% water and the remainder solids, is mixed with corn-steep liquor in a mixing tank. Water is added to produce a diluted sugar mixture containing 2% (w/w) invert sugars. 125 kg corn-steep liquor and 45 kg molasses are fed into the tank.

What is the concentration of solids in the final mixture?

TLS Online TPP Program

#Question id: 14168

#Section 5: Bioprocess Engineering and Process Biotechnology

Corn-steep liquor contains 2.5 % invert sugars and 50% water; the rest can be considered solids. Beet molasses containing 50% sucrose, 1% invert sugars, 18% water and the remainder solids, is mixed with corn-steep liquor in a mixing tank. Water is added to produce a diluted sugar mixture containing 2% (w/w) invert sugars. 125 kg corn-steep liquor and 45 kg molasses are fed into the tank.

What is the concentration of solids in the final mixture?

TLS Online TPP Program

#Question id: 14169

#Section 4: Fundamentals of Biological Engineering

Unsweetened condensed milk is a shelf-stable canned milk product. If 100kg of fresh milk, containing 87% water and the rest milk solids, is condensed using an evaporator to remove 60% of the water from the fresh milk, calculate:

 The mass of water evaporated


TLS Online TPP Program

#Question id: 14169

#Section 5: Bioprocess Engineering and Process Biotechnology

Unsweetened condensed milk is a shelf-stable canned milk product. If 100kg of fresh milk, containing 87% water and the rest milk solids, is condensed using an evaporator to remove 60% of the water from the fresh milk, calculate:

 The mass of water evaporated