The a-keratin chains indicated by the diagram below have undergone one chemical step. To alter the shape of the a-keratin chains—as in hair waving—what subsequent steps are required?

TLS Online TPP Program

#Question id: 3491

#Unit 11. Evolution and Behavior

Some dogs love attention, and learns that if he barks, he gets attention. Which of the following might you use to describe this behavior?

A) The dog is displaying an instinctive fixed action pattern.

B) The dog is trying to protect its territory.

C) The dog has been classically conditioned.

D) The dog's behavior is a result of operant conditioning

E) The dog is displaying controlled by external stimuli

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#Question id: 19808

#Unit 12. Applied Biology

 Pathogen-derived resistance (PDR) has been realized in the cases of 

1. Bacterial diseases 

2. Fungal diseases 

3. Plant diseases

4. Viral diseases

Which of the following options is incorrect?

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#Question id: 1129

#Unit 4. Cell Communication and Cell Signaling

Which of the following plays a role in the relaxation of smooth muscle cells by nitric oxide?

a. cGMP          b. protein kinase A      c. protein kinase G      d. guanylyl cyclise

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#Question id: 14694

#Unit 13. Methods in Biology

Two balls are to be drawn from a bag containing 5 red and 7 white balls. Find the chance that they will both be white

TLS Online TPP Program

#Question id: 27686

#Unit 10. Ecological Principles

Which of the following factors are involved to determine the realized niches of organisms?