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TLS Online TPP Program

#Question id: 11145

Two fundamental concepts about the ion channels of a "resting" neuron are that the channels ________.

#I Life Science/ Life Sciences Group – I-V
  1. are always open, but the concentration gradients of ions frequently change
  2. are always closed, but ions move closer to the channels during excitation
  3. are open or closed depending on their type, and are specific as to which ion can traverse them
  4. open in response to stimuli, and then close simultaneously, in unison
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TLS Online TPP Program

#Question id: 18072

#SCPH06 I Botany

First invertebrates insects fossil appeared in which of the following geological ages?
a) Mesozoic b) Jurassic
c) Paleozoic d) Devonian
e) Permian f) Pennsylvanian
Which of the following combinations give the best answer?
TLS Online TPP Program

#Question id: 18072

#SCPH28 | Zoology

First invertebrates insects fossil appeared in which of the following geological ages?
a) Mesozoic b) Jurassic
c) Paleozoic d) Devonian
e) Permian f) Pennsylvanian
Which of the following combinations give the best answer?
TLS Online TPP Program

#Question id: 18073

#SCPH06 I Botany

During which geological period was there an first definite evidence of land plants and algae dominant of many plants?
TLS Online TPP Program

#Question id: 18073

#SCPH28 | Zoology

During which geological period was there an first definite evidence of land plants and algae dominant of many plants?
TLS Online TPP Program

#Question id: 18074

#SCPH01 Biochemistry

Affinity chromatography on oligo(dT)-cellulose columns, is used for eukaryotic mRNA extraction, instead of using oligo(dT)-cellulose we can also use
TLS Online TPP Program

#Question id: 18074

#I Life Science/ Life Sciences Group – I-V

Affinity chromatography on oligo(dT)-cellulose columns, is used for eukaryotic mRNA extraction, instead of using oligo(dT)-cellulose we can also use