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TLS Online TPP Program

#Question id: 1508

Of the following statements explaining how alterations of the ras gene cause cancer, which is true?

#Unit 4. Cell Communication and Cell Signaling

  1. A base substitution in the c-ras gene that replaces a critical glycine with another amino acid.

  2. Infection of the cell by a tumor virus carrying a v-ras gene.

  3. Linkage of the c-ras gene to a viral promoter.

  4. All of the above statements are true.

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TLS Online TPP Program

#Question id: 12797

#Unit 10. Ecological Principles

Fire suppression by humans
TLS Online TPP Program

#Question id: 12798

#Unit 10. Ecological Principles

Which of the following statements best describes the interaction between fire and ecosystems? 
TLS Online TPP Program

#Question id: 12799

#Unit 10. Ecological Principles

Which biome is able to support many large animals despite receiving moderate amounts of rainfall? 
TLS Online TPP Program

#Question id: 12800

#Unit 10. Ecological Principles

Tropical grasslands with scattered trees are also known as
TLS Online TPP Program

#Question id: 12801

#Unit 10. Ecological Principles

Which type of biome would most likely occur in a climate with mild, rainy winters and hot, dry summers? 
TLS Online TPP Program

#Question id: 12802

#Unit 10. Ecological Principles

In  which  community  would  organisms  most  likely  have  adaptations  enabling  them  to  respond  to  different photoperiods?