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TLS Online TPP Program

#Question id: 5298

Four E. coli strains of genotype a+ b− are labeled 1, 2, 3, and 4. Four strains of genotype a− b+ are labeled 5, 6, 7, and 8. The two genotypes are mixed in all possible combinations and (after incubation) are plated to determine the frequency of a+ b+ recombinants. The following results are obtained, where M = many recombinants, L = low numbers of recombinants, and 0 = no recombinants. On the basis of these results, assign a sex type (either Hfr, F+, or F−) to each strain

#Unit 8. Inheritance Biology

  1. Thus strains 2, 3, 4 and 7 are F−. Strains 1 and 8 are F+, and strains 5, and 6 are Hfr.

  2. Thus strains  3, and 7 are F−. Strains 1, 2 and 8 are F+, and strains 4, 5, and 6 are Hfr.

  3. Thus strains 2, 3, and 7 are F−. Strains 1, 6 and 8 are F+, and strains 4 and 5 are Hfr.

  4. Thus strains 2, 3, and 7 are F−. Strains 1 and 8 are F+, and strains 4, 5, and 6 are Hfr.

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TLS Online TPP Program

#Question id: 19093

#Unit 6. System Physiology – Plant

Necrotrophs leads to___
a) Inhibiting pathogen growth
b) Apoptosis
c) ROS generation
d) Narrow host range
TLS Online TPP Program

#Question id: 3880

#Unit 3. Fundamental Processes

Which one of the following properties of the L-19 IVS ribozyme is not shared with enzymes that are purely protein?
TLS Online TPP Program

#Question id: 18583

#Unit 7. System Physiology – Animal

What is (are) effective way(s) to manage stress?
TLS Online TPP Program

#Question id: 528

#Unit 1. Molecules and their Interaction Relevant to Biology

Once inside a cell, glucose is rapidly phosphorylated to glucose-6-phosphate. What is the main purpose of this phosphorylation?
TLS Online TPP Program

#Question id: 10982

#Unit 7. System Physiology – Animal

If the S-A node discharges at 0.00 seconds, when will the action potential normally arrive at the epicardial surface at the base of the left ventricle?