TLS Online TPP Program

#Question id: 23704


Which of the following seals the sticky ends of restriction fragments to make recombinant DNA?

#Unit 13. Methods in Biology
  1. restriction enzymes
  2. gene cloning
  3. DNA ligase
  4. gel electrophoresis
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TLS Online TPP Program

#Question id: 1534

#Unit 4. Cell Communication and Cell Signaling

Cadherin proteins help animal cells stick (adhere) to each other. Choose which statement about cadherin in cancer cells that are metastasizing (spreading) throughout a patient's body is most likely correct.

TLS Online TPP Program

#Question id: 3562

#Unit 8. Inheritance Biology

In cats, blood-type A results from an allele (IA) that is dominant over an allele (iB) that produces blood-type B. There is no O blood type. Two heterozygous was intercross. What is the probability of first offspring blood-type B?

TLS Online TPP Program

#Question id: 3396

#Unit 11. Evolution and Behavior

The Galapagos finches were an important clue to Darwin's thinking about the origin of species. These finches are believed to have descended from a single ancestral species that colonized the Galapagos archipelago, America, over a short period of time. The Galapagos finches differ in their beak shape and size. Different species feed on seeds that vary in size and hardness. Which of the following is the most likely explanation for these patterns?

TLS Online TPP Program

#Question id: 20275

#Unit 7. System Physiology – Animal

Vasopressin has two actions, one on the kidney and the other on vascular smooth muscle, Contraction of vascular smooth muscle are mediated by different receptors, different intracellular mechanisms, and different second messengers,
a. The receptor for ADH on vascular smooth muscle is a V1 receptor
b. The receptor for ADH on the vascular smooth muscle is a V2 receptor
c. The second messenger for this action is IP3/Ca2+ 
d. The second messenger is cAMP.
Which of the above is/are correct? 

TLS Online TPP Program

#Question id: 5345

#Unit 8. Inheritance Biology

Which of the following above is most probable mode of inheritance?