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TLS Online TPP Program

#Question id: 334

Which of the following statements about hydrogen bonding is not true?

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. In liquid water, the average water molecule forms hydrogen bonds with three to four other water molecules.

  2. Hydrogen bonds account for the anomalously high boiling point of water.

  3. Individual hydrogen bonds in liquid water exist for many seconds and sometimes for minutes.

  4. The strength of a hydrogen bond depends on the linearity of the three atoms involved in the bond.

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TLS Online TPP Program

#Question id: 4350

#Unit 3. Fundamental Processes

Portions of the DNA sequences of normal and mutant b-globin genes are shown. The most plausible explanation for why the indicated mutation (changing an A to a G) results in the disease b-thalassemia is that the mutation
TLS Online TPP Program

#Question id: 28234

#Unit 5. Developmental Biology

which statement is correct the Principles of stem cell regulation?
TLS Online TPP Program

#Question id: 28914

#Unit 4. Cell Communication and Cell Signaling

Wnt/calcium pathway leads to increased Ca2+ levels activates Ca2+-dependent signaling molecules such as; 
a) Protein kinase B
b) Protein kinase C
c) Ca2+/calmodulin-dependent protein kinase (CamKII),
d) Calcineurin phosphatase
TLS Online TPP Program

#Question id: 28648

#Unit 2. Cellular Organization

Which of the following are the MCM helicase loading factors?
TLS Online TPP Program

#Question id: 18832

#Unit 13. Methods in Biology

The following PCR technique allows measuring the DNA amplification at each cycle of PCR contrary to end point detection in traditional PCR