TLS Online TPP Program

#Question id: 5037


Genes control development by:

#Unit 5. Developmental Biology
  1. controlling where and when proteins are synthesized

  2. containing small preformed body parts and organs that become "expressed" during development

  3. directly controlling phenotypes, without intermediates or influence from the environment

  4. acting as enzymes to build proteins

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TLS Online TPP Program

#Question id: 416

#Unit 1. Molecules and their Interaction Relevant to Biology

The immediate precursors of DNA and RNA synthesis in the cell all contain:

TLS Online TPP Program

#Question id: 19311

#Unit 4. Cell Communication and Cell Signaling

which of the following pathogen produces HC-toxin?

TLS Online TPP Program

#Question id: 2203

#Unit 2. Cellular Organization

Parietal cells acidify the stomach contents while maintaining a neutral cytosolic pH by: 

a. exporting “excess” cytosolic OH– as HCO3–.
b. exchanging HCO3– for Cl–.
c. preserving electroneutrality by accompanying the movement of each Cl– ion into the stomach lumen by a K+.
d. the excess K+ ions pumped inward by the H+/K+ ATPase are returned to the stomach lumen, thus maintaining the normal intracellular K+ concentration.
Which of the following combination is correct?

TLS Online TPP Program

#Question id: 28905

#Unit 4. Cell Communication and Cell Signaling

Non-canonical Wnt signaling is initiated by____

TLS Online TPP Program

#Question id: 29049

#Unit 10. Ecological Principles

Some given statements about anti freezing are given;
a. some invertebrates to withstand temperatures as low as –18°C without freezing, in presence of glycoproteins
b. Sodium, potassium, or chloride ions involve to increasing  the blood freezing point, so the lack of these ions some species help to lower the blood freezing point
c. Amphibians release large amount of glucose into the blood to prevent freezing of blood in cold
d. Sodium, potassium or urea function as anti freezing in their blood
e. Glycine causes supercooling in plants
Which of the following statements about supercooling/anti freezing is correct?