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TLS Online TPP Program

#Question id: 11162

Which statement represents the best explanation for the observation that the nuclear DNA of wolves and domestic dogs has a very high degree of homology?

#Unit 9. Diversity of Life Forms
  1. Dogs and wolves have very similar morphologies.
  2. Dogs and wolves belong to the same order.
  3. Dogs and wolves are both members of the order Carnivora.
  4. Dogs and wolves shared a common ancestor very recently.
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TLS Online TPP Program

#Question id: 2145

#Unit 2. Cellular Organization

An electrogenic Na+ transporter:
TLS Online TPP Program

#Question id: 2146

#Unit 2. Cellular Organization

In one catalytic cycle, the Na+/K+ ATPase transporter transports:
TLS Online TPP Program

#Question id: 2147

#Unit 2. Cellular Organization

Movement of water across membranes is facilitated by proteins called:
TLS Online TPP Program

#Question id: 2148

#Unit 2. Cellular Organization

The specificity of the potassium channel for K+ over Na+ is mainly the result of the:
TLS Online TPP Program

#Question id: 2149

#Unit 2. Cellular Organization

A ligand-gated ion channel (such as the nicotinic acetylcholine receptor) is:
TLS Online TPP Program

#Question id: 2150

#Unit 2. Cellular Organization

Which of the following increase(s) membrane fluidity?