The "dead-leaf" butterfly is aptly named. This is an example of what kind of defense against predation?

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#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? 

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#Question id: 13055

#Unit 13. Methods in Biology

Precision will be reduced, but yield will be increased

Optimisation of a PCR reaction is often a compromise between the competing demands for precision, efficiency and yield. Although the specific effects may vary, generally, increasing the annealing temperature will increase non-specific primer binding and reduce precision. Increasing the length of the elongation phase will reduce the proportion of incomplete newly-synthesised strands and therefore increase yield. In this case, the potential effect on efficiency is unclear. Increasing the elongation phase would increase the reaction time, but the time taken to ramp down to a lower annealing temperature would be reduced.

Which of the following will provide least specific amplification in qPCR?

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#Question id: 12277

#Unit 7. System Physiology – Animal

A 45-year-old man adds lots of high-fiber wheat and bran foods to his diet to reduce his cholesterol. He loses 30 lb on the new diet, but has undesirable side effects such as stomach cramps, flatulence, and diarrhea. His gastroenterologist diagnoses a syndrome called gluten-enteropathy or celiac sprue. Which of the following is decreased in this man?

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#Question id: 14079

#Unit 1. Molecules and their Interaction Relevant to Biology

Which DNA is favored in many solutions that are relatively devoid of water with the base pair per turn of

A. B DNA

B. A DNA

C. Z DNA

D. 10 bp per turn

E. 11 bp per turn

F. 12 bp per turn

Which of the following combination is correct?

TLS Online TPP Program

#Question id: 26425

#Unit 3. Fundamental Processes

Longer mismatches (2 to 6 bp) recognized by