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TLS Online TPP Program

#Question id: 1393

In research on aging (both cellular aging and organismal aging), it has been found that aged cells do not progress through the cell cycle as they had previously. Which of the following, if found in cells or organisms as they age, would provide evidence that this is related to cell signalling?

#Unit 4. Cell Communication and Cell Signaling

  1. Growth factor ligands do not bind as efficiently to receptors.

  2. Hormone concentrations decrease.

  3. cAMP levels change very frequently.

  4. Enzymatic activity declines.

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TLS Online TPP Program

#Question id: 2070

#Unit 2. Cellular Organization

The sodium-potassium pump is called an electrogenic pump because it:
TLS Online TPP Program

#Question id: 19702

#Unit 13. Methods in Biology

What is aVL in augmented unipolar limb lead?
TLS Online TPP Program

#Question id: 9579

#Unit 10. Ecological Principles

Allen’s rule states that,
TLS Online TPP Program

#Question id: 423

#Unit 1. Molecules and their Interaction Relevant to Biology

The glycolytic pathway oxidizes glucose to two molecules of pyruvate and also produces a net of two molecules of ATP. ATP allosterically inhibits the enzyme, PFK-1, that catalyzes the third step of glycolysis. This is an example of ________.
TLS Online TPP Program

#Question id: 14484

#Unit 13. Methods in Biology

Find the chance of throwing more than 15 in one throw with 3 dice