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TLS Online TPP Program

#Question id: 11010

Which of the following best explains how sympathetic stimulation affects the heart?

#XL - T Zoology
  1. Permeability of the S-A node to sodium decreases
  2. Permeability of the A-V node to sodium decreases
  3. Permeability of the S-A node to potassium increases
  4. There is an increased rate of upward drift of the resting membrane potential of the S-A node
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TLS Online TPP Program

#Question id: 3743

#XL - Q Biochemistry

 In DNA repair, DNA glycosylases recognize deaminated bases within the DNA polymer and remove the deaminated
TLS Online TPP Program

#Question id: 3744

#XL - Q Biochemistry

Deaminated bases must be removed from DNA because
TLS Online TPP Program

#Question id: 3745

#XL - Q Biochemistry

In the Holliday model describing recombination
TLS Online TPP Program

#Question id: 3746

#XL - Q Biochemistry

During recombination in E. coli, ________ recognize(s) regions of sequence similarity and promote(s) strand invasion, while ________ bind(s) to a Holliday junction promoting strand migration.
TLS Online TPP Program

#Question id: 3747

#XL - Q Biochemistry

The sequence of proteins used in bacterial recombination is
TLS Online TPP Program

#Question id: 3748

#XL - Q Biochemistry

How are the BRCA proteins and their genes implicated in breast cancer?