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TLS Online TPP Program

#Question id: 11545

Growth factors are local regulators that ________.

#Unit 7. System Physiology – Animal
  1. are modified fatty acids that stimulate bone and cartilage growth
  2. are found on the surface of cancer cells and stimulate abnormal cell division
  3. bind to cell-surface receptors and stimulate growth and development of target cells
  4. convey messages between nerve cells
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TLS Online TPP Program

#Question id: 5218

#Unit 11. Evolution and Behavior

Several of the different globin genes are expressed in humans, but at different times in development. What mechanism could allow for this?
TLS Online TPP Program

#Question id: 3263

#Unit 11. Evolution and Behavior

From an evolutionary point of view, plant tendrils derived from leaves and those derived from stems are examples of
TLS Online TPP Program

#Question id: 12956

#Unit 10. Ecological Principles

For  nearly 200  years, biogeographers have  noted that  the  tropics  have  more terrestrial species than  temperate regions. Which of the following is NOT a plausible explanation for this pattern?
TLS Online TPP Program

#Question id: 9245

#Unit 9. Diversity of Life Forms

One characteristic that distinguishes a population in an extinction vortex from most other populations is that
TLS Online TPP Program

#Question id: 2290

#Unit 2. Cellular Organization

The cytoskeleton includes all of the following except