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TLS Online TPP Program

#Question id: 549

Which one of the following statements is true of enzyme catalysts?

#I Life Science/ Life Sciences Group – I-V

  1. They bind to substrates, but are never covalently attached to substrate or product.

  2. They increase the equilibrium constant for a reaction, thus favoring product formation.

  3. They increase the stability of the product of a desired reaction by allowing ionizations, resonance, and isomerizations not normally available to substrates.

  4. They lower the activation energy for the conversion of substrate to product.

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TLS Online TPP Program

#Question id: 4801

#SCPH12 I Genetics

You set up a mapping cross involving two genes in Aspergillus and determine the following percentages of tetrad types: parental ditype 51%, nonparentalditype 49%. What can you say about your genes?
TLS Online TPP Program

#Question id: 39

#I Life Science/ Life Sciences Group – I-V

What functional groups are present in this molecule?
TLS Online TPP Program

#Question id: 12903

#SCPH28 | Zoology

A gene isolation system that uses adapted vectors termed as_______
TLS Online TPP Program

#Question id: 10950

#SCPH28 | Zoology

Presentation of antigen on MHC-I by a cell will result in
TLS Online TPP Program

#Question id: 5753

#SCPH06 I Botany

A bacterial histidine mutant was plated on minimal medium and a single colony grew. You decide to sequence the histidine biosynthetic gene of the revertant and discover that the original mutation is still present.  This colony must have been able grow due to a