TLS Online TPP Program

#Question id: 28215


In the frog (Xenopus laevis) a gradient of the paracrine factor activin, which of the following observation is correct at the lower concentrations of activin ?

#Unit 5. Developmental Biology
  1. shows default gene expression instructed the cells to become blood vessels and heart
  2. activate the Xbra gene and instructed the cell to become muscle
  3. shows default gene expression instructed the cells to become muscle cells
  4. activate goosecoid gene and instructed the cell to become the frog’s dorsal-most structures
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TLS Online TPP Program

#Question id: 11647

#Unit 7. System Physiology – Animal

After menopause, hormone replacement therapy with estrogen-like compounds is effective in preventing the progression of osteoporosis. What is the mechanism of their protective effect?

TLS Online TPP Program

#Question id: 11648

#Unit 7. System Physiology – Animal

Within minutes following a normal delivery, flow through the foramen ovale decreases dramatically. What is the cause of this change?

TLS Online TPP Program

#Question id: 11649

#Unit 7. System Physiology – Animal

The red lines in the figure above illustrate the normal relationships between plasma insulin concentration and glucose production in the liver and between plasma insulin concentration and glucose uptake in muscle


In the figure, which lines most likely illustrate these relationships in a patient with type 2 diabetes?

TLS Online TPP Program

#Question id: 11650

#Unit 7. System Physiology – Animal

The red lines in the figure above illustrate the normal relationships between plasma insulin concentration and glucose production in the liver and between plasma insulin concentration and glucose uptake in muscle.


 

In the figure, which lines most likely illustrate these relationships in a patient with acromegaly?

TLS Online TPP Program

#Question id: 11651

#Unit 10. Ecological Principles

Succession on a newly exposed site that was not previously occupied by soil and vegetation refers to

TLS Online TPP Program

#Question id: 11652

#Unit 10. Ecological Principles

The sequence of changes initiated by disturbance is called succession, and the ultimate association of species achieved is called