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TLS Online TPP Program

#Question id: 20311

Which of the following is INCORRECT about Aldosterone;

#Unit 7. System Physiology – Animal
  1. Aldosterone exerts nearly 90 percent of the mineralocorticoid activity of the adrenocortical secretions, but cortisol, the major glucocorticoid secreted by the adrenal cortex.
  2. Aldosterone’s mineralocorticoid activity is about 3000 times greater than that of cortisol, but the plasma concentration of cortisol is nearly 2000 times that of aldosterone.
  3. Aldosterone increases reabsorption of potassium and simultaneously increases secretion of sodium by the renal tubular epithelial cells, especially in the principal cells of the collecting tubule
  4. A high concentration of aldosterone in the plasma can transiently decrease the sodium loss into the urine to as little as a few milliequivalents a day
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TLS Online TPP Program

#Question id: 15968

#Unit 12. Applied Biology

The formation of embryoids from the pollen grains in the tissue culture medium is due to____
TLS Online TPP Program

#Question id: 23255

#Unit 13. Methods in Biology

From where do these centromeric probes are derived from the 
1. Highly repetitive DNA sequences
2. Alpha-satellite DNA sequences
3. Less repetitive DNA sequences
4. Beta-satellite DNA sequences
Which of the following option has correct combination?
TLS Online TPP Program

#Question id: 33986

#Unit 2. Cellular Organization

What is the relationship between the chromosome scaffold of dividing cells and the matrix of interphase cells

A. The same DNA fragments that are found within the nuclear matrix in vivo can be retrieved from the metaphase scaffold
B. Fragments containing MAR sequences can bind to a metaphase scaffold; it is likely that DNA contains a single type of attachment site.
C. In interphase cells the attachment site is connected to the nuclear matrix, whereas in mitotic cells it is connected to the chromosome scaffold.
TLS Online TPP Program

#Question id: 4608

#Unit 11. Evolution and Behavior

What must be true of any organ described as vestigial?
TLS Online TPP Program

#Question id: 33423

#Unit 1. Molecules and their Interaction Relevant to Biology

Which enzyme catalyses this reaction