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TLS Online TPP Program

#Question id: 3681

 A mutated E. coli cell carries out and completes DNA replication, but the lagging strands are found to contain more errors than normal. These errors are not found evenly distributed throughout the lagging strands, but are found in clusters. Which enzymatic activity is missing from this cell?

#Section 3: Genetics, Cellular and Molecular Biology

  1. the 3’→ 5’ exonuclease activity of pol III

  2. the 5’→ 3’ exonuclease activity of pol III

  3. the 3’→ 5’ exonuclease activity of pol I

  4. the 5’→ 3’ exonuclease activity of pol I

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TLS Online TPP Program

#Question id: 4327

#Section 3: Genetics, Cellular and Molecular Biology

What would occur if the repressor of an inducible operon were mutated so it could not bind the operator?
TLS Online TPP Program

#Question id: 1398

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following properties is (are) characteristic of a benign tumor?

a. well differentiated              b. localized to tissue of origin             c. metastatic               

d. promotes angiogenesis        e. surrounded by a fibrous capsule
TLS Online TPP Program

#Question id: 3041

#Section 2: General Biology

Which statement about gram-negative bacteria is correct?
TLS Online TPP Program

#Question id: 15107

#Section 1: Engineering Mathematics

Is the matrix  an involutory matrix ? 
TLS Online TPP Program

#Question id: 3619

#Section 3: Genetics, Cellular and Molecular Biology

Alleles that are both expressed in a heterozygote are