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#Question id: 13191


Which of the following statements about circadian rhythms is correct?

#Unit 10. Ecological Principles
  1. They are expressed during cell division only. 
  2. They occur only in mammals.
  3. They are not found in humans. 
  4. They have a periodicity of about 24 hours.
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TLS Online TPP Program

#Question id: 11099

#Unit 7. System Physiology – Animal

In the mammalian alveoli, the partial pressure of O2 is _______ that of atmospheric air and the CO2 partial pressure is _______ that of atmospheric air

TLS Online TPP Program

#Question id: 10348

#Unit 6. System Physiology – Plant

During ammonium assimilation, requires two enzymes converting ammonium to amino acids. Each of which is Glutamine synthetase (GS), given below some statements about GS ;

a) GS transfers the amide group of glutamine to 2-oxoglutarate, yielding two molecules of glutamate

b) it requires a divalent cation such as Mg2+, Mn2+, or Co2+ as a cofactor

c) Plants contain two classes of GS, one in the cytosol and the other in root plastids or shoot chloroplasts

d) The cytosolic forms are expressed in germinating seeds or in the vascular bundles of roots and shoots and produce glutamate for intercellular nitrogen transport

e) The GS in root plastids generates amide nitrogen for local consumption; the GS in shoot chloroplasts reassimilates photorespiratory NH4+

f) Light and carbohydrate levels alter the expression of the cytosolic forms of the enzyme, but they have little effect on the plastid forms.

Which of the following statements is correct?

TLS Online TPP Program

#Question id: 18657

#Unit 13. Methods in Biology

In SDS PAGE band sharpening effect are observed, this band sharpening effect arises due to the

TLS Online TPP Program

#Question id: 11521

#Unit 2. Cellular Organization

The Na+-K+ ATPase is responsible for maintaining:

TLS Online TPP Program

#Question id: 28265

#Unit 5. Developmental Biology

 Resact is a___